Circle of Power

Casting Time: 1 action
Range: Self (30-foot radius)
Duration: Concentration, up to 10 minutes
Divine energy radiates from you, distorting and diffusing magical energy within 30 feet of you.
Until the spell ends, the sphere moves with you, centered on you. For the duration, each friendly creature in the area (including you) has
advantage on saving throws against spells and
other magical effects.
See PHB, pg. 221.