You invoke the greatest of all prayers and touch a wounded or recently slain creature, bestowing upon it the gift of life at the expense of your own health.

Daily   ✦     Divine, Healing
Standard Action      Melee touch

Target: One creature

Effect: If the target is alive, it regains hit points no greater than one-half your maximum hit points (your choice), and you take an equal amount of damage.
    If the target died since the end of your last turn, it returns to life at 0 hit points, and you take damage equal to one-half your maximum hit points.
    You can't avoid or reduce this damage in any way.

Published in Player's Handbook, page(s) 98.