Aura versus Alignment

Caster Level(s): Cleric 8
Innate Level: 8
School: Abjuration
Descriptor(s):
Component(s): Verbal, Somatic
Range: Personal
Area of Effect / Target: Caster
Duration: 1 Round / Level
Additional Counter Spells:
Save: Harmless
Spell Resistance: Yes

When this spell is cast, the caster chooses to be protected from either good or evil. He receives a +4 deflection bonus to Armor Class, immunity to mind-affecting spells and spell-like abilities used by creatures of the chosen alignment, and spell resistance 25 against spells cast by creatures of the chosen alignment. Creatures of the chosen alignment also take 6 + 1d8 damage each time they successfully strike the Cleric.