A barrier of magical energy appears and protects you or an ally. The barrier absorbs 1d10 + your spellcasting ability modifier damage from the spell. If you reduce the spell's damage to 0, you gain an extra dice on the first spell attack with the same damage type.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the shield increases by 1d10 damage for each level above 2nd.