Elemental Shield

Reach out your hand and form a spherical shield granting you and everyone inside resistance to elemental damage (acid, cold, fire, lightening, and thunder) until the start of your next turn. 

Everyone within the spell's radius has resistance to the triggering damage type until the start of your next turn.

The spell has a radius of five feet, with an additional five feet added per level of the spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the radius of the dome increases by 5 feet for each slot level above first.