Suffering

1: Domain Spells, Suffering
2: Channel Divinity: Self Sacrifice
6: Tribulation
8: Blessed Strikes
17: Revel in Agony

Channel Divinity: Self Sacrifice

Starting at 2nd level, you can use your Channel Divinity to take on the pain meant for others.
When a creature within 30 feet of you would take damage, you can use your reaction to magically take that damage instead; this damage can't be reduced in any way. This feature also transfers any other effects that might accompany the damage, treating you as if you were the original target of the attack or effect.

Tribulation

At 6th level, when a creature within 30 feet of you takes damage or deals damage with a weapon attack, you can use your reaction to spend suffering dice to affect the roll as if you were the target or were dealing the damage.

Blessed Strikes

You are blessed with divine might in battle. Starting at 8th level, once per round, when you would deal damage to a creature with a weapon attack or a cleric cantrip, you may deal an additional 1d8 points of damage of a type appropriate for you domain (see Narrator). At 14th level, the additional damage with weapon attacks increases to 2d8 (cantrips still only deal an additional 1d8).

Revel in Agony

Beginning at 17th level, damage that would break your will or render you senseless has no effect. You gain the following benefits:

• You no longer need to make concentration checks as a result of taking damage

• You don't fall unconscious as a results of having 0 hit points. You must still make death saving throws and can die as normal.