WoWDB

Holy:

Fills you with Holy Light, increasing your casting speed by 10%, improving healing spells by 5% and giving melee attacks a chance to heal you for [ 18.8% of AP + 18.8% of Holy Spell Power ] and restore 4% of base mana.

Protection, Retribution:

Fills you with Holy Light, increasing your casting speed by 10%, improving healing spells by 5% and giving melee attacks a chance to heal you for [ 15% of AP + 15% of Holy Spell Power ] and restore 4% of base mana.