You call up a swirling shield of darkness from some far domain, interposing it between yourself and dire peril.

Daily   ✦     Arcane
Immediate Reaction      Personal

Trigger: You are hit and damaged by an attack

Effect: The damage against you drops to 0.

Update (8/12/2011)
Updated in Class Compendium.

Published in Player's Handbook, page(s) 136, Class Compendium.