In most cases I imagine a grunt would say this about Blazer or Blazer would say these at about a grunt.Upon seeing an enemy:
"I see bad guy!" - Said upon seeing the Master Chief.
"I smelled one!" - Upon spotting the Chief.
"See ya! See ya!" - Upon spotting the Chief.
"Wake up! The enemy!" - To other Grunts.
“Another here!”
“Look! Over there!”
“Humans!”
"Wake up! He's here!" - To other Grunts.
"Wake up! Bad guys!" - To other Grunts.
"Here I found it! Help! Need help!"
"Why me?!" - As it sees the Chief coming.
"Stupid!" - Said when Grunt sees Master Chief for first time.
"More here!" - Upon spotting Master Chief and/or Marines.
"Get up!" - To sleeping Grunts.
Grunt 1:"He's there!!"
Grunt 2:"Where, where?!"
"He's gonna kill us all!" - As the Master Chief starts firing into a pack of Grunts.
“WE’RE ALL GONNA DIE!!!”
"I hate you!" - As he sees the Master Chief.
"There you are!" - As it sees the Master Chief.
"What?!" - When he discovers the Master Chief behind him or nearby.
"It's... it's that Cyborg!" - When the Chief appears.
"Don't shoot! Don't shoot!!"
"Hey, look out!"
"Back off!"
Incoherent screaming/crying - Also when running away
Grunt 1: "STOP SHOOTING ME!" Grunt 2: "Sorry!" - When one Grunt shoots the other
When moving to attack:
"Alright!"
"Cover me."
“This way! This way!”
"Be very quiet now." - When trying to creep around undetected.
"Can't find him!"
"I'm goin' in!"
"You can't hide from me!"
"Alright!" - While leaping up onto a Shade.
"I'll get ya!"
"I'm going with you!" - To other Grunts.
Stay together, teet team.
When attacking an enemy:
"Die, devil!"
"Burn!" - When Grunt opens fire when Master Chief caught unaware.
“Suffer!”
"Hurt you!" - When attacking an enemy of any kind.
"Kill you."
"I'll bite your kneecaps off!"- Most likely a reference to Monty Python and the Holy Grail.
"I'll take you down!"
"Yeah, come on! Bring it!"
"You want some of this? COME ON!"
"Flare!" - When throwing a plasma grenade.
"Everybody, duck!" - Throwing a plasma grenade.
"Down in front!!" - When throwing a grenade.
"Here I go..." - Throwing a grenade.
"Eat grenade!" - Throwing grenade.
"Die!" - About Master Chief.
"Good." - When Master Chief's shields are down.
"You think you soooo great!" - When Master Chief's shields are down.
"You're history!" - When the Chief's shields are down.
"HA HA HA HA HA HA HA HA!" - Said when you either die, or when you are outnumbered and outgunned.
"Good, good"- Said when your shields are down or if you're taking lots of damage.
"Glory!"
"Me kill you!"
When an enemy dies:
"We'll all get medals for this!"
"Who's 'the man'?!"
"We win! We win!"
"Get up so I can kill you again!" - Rare.
"We are the Champions! We are the Champions!" - Sung to the tune of the song, when Master Chief is killed.
"Get up so I can do that again! And again! Again!" on legendary, after killed the Chief; similar to the Marine's "Get up so I can kill you again!"
"I call the helmet!" - When player gets killed by a Grunt.
"Oh, oh! Can I have his helmet?" When player dies.
"That was me, all me!" - When player dies.
"Can I have his helmet? The Sarge is wasted, man!"- Rare, but usually when a Grunt kills The Master Chief, or "kills" Johnson or Stacker.
"Dead! Dead devil!"
"Me kill it!"
"In da face!"
"Oh. I get his gun!"
"Eh? It dies!?!" - Rarely heard on legendary.
"We’re gonna go down in history!"
"Not so tough now!"
When an ally is killed:
"Whoa, he's dead, RUN!!" - When you kill an Elite.
"Bastard!" - Said during combat after another Grunt is killed, or is greatly wounded.
"No. No more!"
"Casualty!"
"Whoa - I'm outta here!" - When allies are shot.
"He's on Elite!" - When Master Chief is attacking their leading Elite.
"He's gone, he's gone!!" - When you kill an Elite.
"Bad Cyborg!" - After having most of his allies killed by Master Chief.
"Bad, BAD Cyborg!" - Said when all of his allies are killed.
"He's gone!"
"They got Elite! Run!" - When Elite is killed.
"Leader dead! Run away!" - When Elite is dead.
"Lea-der dead! Run a-way!"
"You'll pay for that, man!" - When high ranking Elite or a hunter is killed.
"They got the Elite! RUN!"
"What are you doing?!" - When a Covenant soldier betrays another.
"What are you thinking?" - Same as above.
"He was your friend!" - Same as above.
"Sorry!" - If the Grunt shot another ally.
"It wasn't me!" - When a Grunt shoots one of his allies by accident.
When retreating:
"Little people first!" - When running away.
"Grunts first! We’re smaller!"
"Not me!" - As it runs away.
"Get out of my face!"
"Flee!" - Very high and plaintive.
"Get out of my way!" - When the Unggoy is fleeing from you and there are several other Covenant around.
"He's everywhere!!" - When Master Chief runs circles around fleeing Grunts and kills them.
"Feet, don't fail me now!" - When fleeing.
“I just wet myself!”
"CAN'T-RUN-WITH-THING-ON-BACK!" - Fleeing Grunt.
I can't run when I'm scared!"-While retreating.
"CELLPHONE!"-Extremely rare.
When under attack or dying:
"Nothing but Teets and T-eetium, they said!" - probably complaining about the job description
"Wow!" - As he dies.
"Uggghhhh..." - Dying.
"Bwahaaaaaaah!" - Said when killed by a grenade.
"WAAAAAAAAAAAAHHHHHHHH!!!" - When getting blown away by an explosion.
"God dammit!" - Right after being shot or dying.
"Screw you!" - When shot.
"Do that again! Oh, I dare ya." Upon being hit and not dying.
"Hot! Hot! Hot! Hot!" - When shot by plasma fire.
"Ow, ow, ow, ow, ow, ow, ow." - When wounded with several shots.
"You S.O.B.!" - When hit with a round that almost kills him.
"Nooohoho!" - When a Grunt is stuck with a plasma grenade, Flood infection form or needler's needles.
"Not again!"- When stuck with a plasma grenade or being chased by needles from a needler.
"Taxi!!"-When stuck with plasma grenade
"Not AGAIN!" - When stuck with a plasma grenade
"Stop it! Stop It!" - When panicking and being harassed by small arms fire.
"Aaah! Bad Cyborg!" - When injured.
"Get it off! God it hurts! Nooooohohooo!" - When Flood infection form is on it.
"No, please, no!" - Heard when fighting with the Flood.
"Get it off me! Get it off!" - When stuck by plasma grenade, needler's needles, or Flood infection form.
"HUH?!?!" - Said disbelievingly as a grenade falls next to it.
"Ooh, Aah, Get-it-off-of-MEE!" - When stuck by plasma grenade, needler's needles, or Flood infection form.
"It burns!"- When shot by a plasma weapon.
"Stop it!" - When player melees unsuspecting Grunt in the back.
"Grenade!"
"Grenade! Bad!"
"Not me!"
"Ow! Ow! Ow! Ow!"
"Yikes!" - When shot in the behind.
"It'll take more than that!" - Upon being hit and not dying. Rare.
"Stop shooting me!" - Getting shot by its allies.
"Give it your best shot!" -Upon being hit and not dying.
"No! Please no!" -Upon being hit and not dying.
"Too close..too clooose" -Upon being hit and not dying.
"Get back (calm)" -Upon being hit and not dying.
"Its right HERE!" -Upon being hit and not dying.
"Yipe!" -Upon being hit and not dying.
"AU!" -Upon being hit and not dying.
"No, not me!" -Upon being hit and not dying.
"Can take more than that, TIN MAN!" -Upon being hit and not dying.
When an ally retreats:
"Oh, you no leave me!"
"Coward!"
"I need you, stay!!"
"No running, fight!"
"Stay at ground!"
"Stand and fight!"
"No run away!"
"You stay here, COWARD!"
"What are you doing?! STAY!!"
When an enemy retreats:
"Haha, yeah, run!"
"Run, devil, run!"
"Oh, you afraid of me?
Misc:
"Woah! Good thing that food nipple's waiting for me at the starship, cuz man, have I worked up a big grunty thirst!" - Thirsty Grunt
"Mmmm...Jackal stew..." - Asleep in Assault on the Control Room, corridor of sleeping Grunts.
"Hey! No sleeping on the job!!"
"Follow my bright...blue...BALLS!" - When guiding a suicide run while holding two plasma grenades