Stunning Barrier

Abjuration
Level: Artificer * 1, Cleric */Oracle * 1, Inquisitor * 1, Paladin * 1, Sorcerer */Wizard * 1
Components: V, S
Casting Time: 1 Standard Action
Range: personal
Target: you
Duration: 1 round/level or until discharged
Saving Throw: None and Will negates, see text
Spell Resistance: no and yes, see text
  You are closely surrounded by a barely visible magical field.
  The field provides a +1 Deflection Bonus to AC and a +1 Resistance Bonus on saves. Any creature that strikes you with a Melee Attack is Stunned for 1 round (Will negates). Once the field has Stunned an opponent, the spell is discharged.