Deterrence

You attempt to deter the attacking creature after they make a melee attack roll. The target must make a Wisdom saving throw. On a failed save the target takes 1d8 Psychic damage and can not make an attack at your character for the duration of the spell. On a failed save the creature takes half as much damage, rounded down, and can make attacks at your character. The target can end the spell early by making Wisdom saving throws at the end of its turn.

At higher levels. When you cast this spell using a spell slot of 2nd or higher, the damage increases by 1d8 for each for each slot level above 1st.