Type: Reserve
Source: Complete Champion
Your connection to the divine principle of protection shields you or an ally from attacks.
Prerequisite: Access to the Protection domain.
Benefit: As long as you have an abjuration spell available to cast, you can use a standard action to provide a sacred (if your deity is good or neutral) or profane (if your deity is evil) bonus to AC equal to the level of the highest-level abjuration spell you have available to cast. You can apply this bonus either to your AC or to that of a single ally within 30 feet, and it persists until the beginning of your next turn.
As a secondary benefit, you gain a +1 competence banns to your caster level when casting abjuration spells.