Acolyte of Spirituality (3.5e Feat)
From D&D Wiki
 Acolyte of Spirituality [Exalted]
You may radiate holy energy in effort to vanquish the evil around you.
Benefit: A character with this feat can punish undead and evil outsiders a number of times per day equal to her Charisma modifier as an attack action. This blast of holy power has a 20 foot radius, doing 6d6 holy damage unless they succeed at a Fortitude save (DC 10 +1/2 character level + Cha modifier) for half damage.