You utter a prayer, placing a mantle of faint silvery light upon yourself or an ally. The mantle repels attacks as long as its wearer doesn't attack.

Daily   ✦     Divine
Standard Action      Ranged 10

Target: You or one ally

Effect: The target gains a +5 power bonus to AC and a +10 power bonus to all other defenses until the end of the encounter. These bonuses end if the target makes an attack.

Published in Player's Handbook, page(s) 68, Class Compendium.