Divine Aegis
Divine Aegis is a Priest spell in the WoW Forever client.
Your non-periodic critical heals create a protective shield on the target, absorbing 5% of the amount healed. Shields up to 1200 damage and lasts 12 sec. (Numbers at level 60; they grow with your level.)
Data from the WoW Forever client, build 1.60.1.70938, extracted .