In the first Halo, right before the Flood arrives (as you're watching Pvt. Jenkins' recording), one of the Marines (Mendoza, maybe?) says "I have a bad feeling about this..." to which another Marine replies "Man, you always have a bad feeling about this!"

In Halo 2, when you are playing as the Arbiter during the assault on the Heretic, you get locked in a room and the Flood arrives. Just before that, the grunts have a strikingly similar conversation to the marines: "Me have bad feeling about this..." "You ALWAYS have bad feeling about this! You have bad feeling about morning food nipple!"

It's not exact, but it's fairly accurate. Either way, I just thought it was an interesting parallel.