Faith Unbroken

You imbue allies with unshakeable divine protection that prevents death. Each target cannot be reduced below 1 hit point by any means for the duration and gains immunity to fear and charm effects. This protection triggers only once per target and ends after preventing what would have been a killing blow. This prevention applies to damage and effects that would kill without dealing damage (e.g., disintegration, death effects); when it triggers, the killing effect is negated and the target remains at 1 HP. Ongoing hazards may still harm the target on later turns. If the protection hasn't triggered by the time the spell ends, it expires harmlessly.