Your quick word staves off death before it can grasp your friend.

Daily   ✦     Arcane, Healing
Immediate Interrupt      Close burst 5

Trigger: An ally within 5 squares of you dies

Target: The triggering ally in the burst

Effect: The target regains hit points as if he or she had spent a healing surge. In addition, the target can stand up and shift 2 squares as a free action.

Published in Player's Handbook 2, page(s) 75.