b0da180f_t__Cataclysm_Primer___GameSpot__Talent
[Requirements] 30 Protection [Effect] Reduce damage taken by 20% for 10 sec. While Ardent Defender is active, the next attack that would otherwise kill you will instead cause you to be healed for 15% of your maximum health. [Talent] 
Ardent Defender
World of Warcraft: Cataclysm Primer - GameSpot