Dispelling Smite

The next time you hit a creature with a weapon attack before this spell ends, the weapon glooms with absorbing darkness as you strike. The attack deals an extra 3d8 radiant damage to the target, and dispels any magical affect of 3 level or low. Any spell above 3 level the casting creature makes a Constitution saving throw. On a Failure the spell ends

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the extra damage increases by 1d8 for each slot level above 3rd and increases the the spell level of automatically dispelled spell by one 1 level.