[Yeager takes aim at a low hanging rock outcropping from the cieling. The blast knocks it on the creatures below.]

Up and up, ja.

[It might not be enough of a distraction, but Yeager holds down a hand from the ledge he's standing on to help Garrus up. He isn't that strong enough to pull up the other by himself, so Garrus will need to partially climb to get up on the ledge.]