Veil of Positive Energy

Abjuration [good]
Level: Paladin * 1
Components: V, S, DF
Casting Time: 1 Standard Action
Range: personal or 5 ft. (see text)
Target: you or all creatures within 5 ft.; see text
Duration: 10 minutes/level (D)
Saving Throw: -
Spell Resistance: -
  You surround yourself with a veil of positive energy, making it harder for undead creatures to harm you. When under the effect of this spell, you gain a +2 Sacred Bonus to AC and a+2 Sacred Bonus on saves. Both of these bonuses apply only against attacks or effects created by undead creatures. You can dismiss this spell before its normal duration as a Swift Action on your turn to deal a number of points of positive energy damage equal to your level to all undead creatures within 5 feet of you.