You erect a psychic shield to protect your mind from assault, and you ward your allies as well.

Encounter
Immediate Interrupt      Close burst 5

Trigger: An enemy hits or misses you with an attack against your Will

Target: You and each ally in the burst

Effect: Each target gains a +4 power bonus to Will until the end of your next turn.

Published in Eberron Player's Guide, page(s) 30.