Dimension Ward

If you and/or another willing creature within 5 feet are caught within the radius of a spell or other effect that deals acid, cold, fire, lightning, or thunder damage, you may cast this spell as a reaction to temporarily grant immunity to that type of damage to both yourself and that willing creature, including against the triggering damage.

This immunity only lasts an instant, and protects against the initial damage of the spell or effect but not any lingering or residual damage or effects that might result from remaining in that area.