Astral Barrier

You create a shimmering dome of starlight centered on a point you can see within range. The dome forms a 10-foot-radius sphere that remains fixed for the duration. The barrier is immune to nonmagical ranged weapon attacks; such attacks cannot pass through or damage it.

Creatures of your choice inside the barrier have resistance to radiant, necrotic, and psychic damage.

A creature that attempts to teleport or magically pass through the barrier must first succeed on a Charisma saving throw. On a failed save, the effect is wasted and the creature takes 2d6 psychic damage.