Through mental force, you will your flesh to become as hard as steel to foil an attack against you.

Encounter   ✦     Psionic
Immediate Interrupt      Personal

Trigger: You are hit by an attack that targets a defense other than Fortitude

Effect: The attack instead targets your Fortitude, and you gain a +2 power bonus to Fortitude until the end of your next turn.

Published in Player's Handbook 3, page(s) 60.