You point your Holy Symbol at another creature you can see within 30 ft. of you and focus divine energy at it. You either:
Restore 1d8+3 HP to the creature.
Force the creature to make a DC 13 Constitution saving throw. On a failed save, the creature takes 1d8+3 Necrotic or Radiant damage (your choice), or half as much on a successful save.
You roll an additional d8 when you reach Cleric levels 7 (2d8), 13 (3d8), and 18 (4d8).
You present your Holy Symbol and censure Undead creatures. Each Undead of your choice within 30 ft. of you must make a DC 13 Wisdom saving throw. If the creature fails its save, it has the Frightened and Incapacitated conditions for 1 minute, and for that duration, it tries to move as far from you as it can on its turns.
This effect ends early if the creature takes damage, if you have the Incapacitated condition, or if you die.