Celestial Ward

You whisper a prayer and create a shimmering sphere of celestial energy that surrounds an area you designate within range. The sphere creates a 10-foot-radius protective aura centered on a point you choose. Creatures within this aura have advantage on saving throws against being charmed, frightened, or possessed, and any creature that starts its turn within the aura takes radiant damage equal to your spellcasting ability modifier if it is hostile to you or your allies. The aura also provides total cover against attacks and spells that would originate from outside of the sphere.