Pact of Protection

You swear a powerful oath to protect your allies. You may target yourself, plus a number of allies equal to your Level, all of whom must clasp hands with you as you perform the ritual.

Whenever an ally with whom you made this pact takes damage, you reduce that damage by one point per die of damage rolled, even if it was Vital damage! You may then choose to take any amount of the remaining damage yourself. If you do so, the damage you take becomes Vital damage in turn, and is not reduced by this spell. You may choose to take damage that gets past your ally's defences.

For example, if your ally has Resistance 3 from their armour, and is struck for 3d10 damage, taking 20, the ritual would reduce this to 17, and their own Resistance will reduce it further to 8. You could choose to take that 8 damage, but it becomes Vital, and bypasses all of your Resistance.

An ally who is protected by this oath who willingly attacks another ally who is protected by this oath loses its benefits. If you willingly attack an ally who is protected by this oath, the spell ends. When the party Takes a Long Rest, this spell ends.