Dark Aegis

You extend your hand to an ally as they take damage and a protective barrier of flame-like shadows surround them. They gain resistance to the damage type of the triggering attack and temporary hit points equal to your spellcasting ability modifier for 1 round.

This spell's duration increases when you cast it with a higher level spell slot. When you cast it with a 3rd level spell slot or higher the duration is 1 minute. With a 5th level spell slot or higher it is 10 minutes, 7th level or higher it is 1 hour and at 9th level it is 8 hours.