Retribution

1st-lavel abjuration
Casting time: 1 action
Range: Self
Target:
Components: V
Duration: 1 hour
Classes: Wizard
Subclasses:

You wrap yourself in shimmering ethereal armor. The next time a creature hits you with a melee attack, it takes force damage equal to half the damage it dealt to you, and it must make a Strength saving throw. On a failed save, the creature is pushed up to 5 feet away from you. Then the spell ends.