Tempest Shield

You point your finger, and the creature that damaged you feels the wrath of thunder. The creature must make a dexterity saving throw, taking 4d10 lightning damage on a failed save and half as much on a successful one. You gain resistance to the trigerring damage types until the start of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d10 for each slot level above 5th.