As an action, you have resistance to radiant damage for the duration.
You can target one additional willing creature that you can touch or see within 18 meters for each additional mana or psi expended. The creatures must be within 9 meters of each other when you target them.
Immunity. You can expend 2 additional mana or psi so the creature is immune to radiant damage.
Dampen the Light
As a reaction, which you take when you take radiant damage, you gain resistance to radiant damage until the start of your next turn.
You can expend 1 additional mana or psi to trigger the spell when a creature that you can touch or see within 18 meters takes radiant damage. The creature gains the resistance instead.