Energy Aegis

Caster Level(s): Cleric/Duskblade/Sorcerer/Wizard 3
Innate Level: 3
School: Abjuration
Component(s): Verbal
Range: Close
Area of Effect / Target: One creature
Duration: 1 round
Saving Throw: Will negates (harmless)
Spell Resistance: Yes (harmless)

When you cast Energy Aegis, specify an energy type (acid, cold, electricity, fire, or sonic). Against the next attack using this energy type that targets the subject, it gains resistance 20.