Aura of Purity

Casting Time: 1 action
Range: Self (30-foot radius)
Duration: Concentration, up to 10 minutes
Energy radiates from you in an aura with a 30-ft. radius. Until the spell ends, the aura moves with
you, centered on you. Each non-hostile creature
in the aura (including you) can't become
diseased, has resistance to poison damage, and
has advantage on saving throws against effects
that cause various conditions.
See PHB, pg. 216.