Faith Unyielding

You hold your deity close to your heart at all times, and you receive a blessing for your profound belief. Once per day, when you and your allies are subjected to the same effect that allows you to make a Dexterity or Constitution saving throw to take only half damage (such as Fire Breath), you can use a Reaction so that you all instead take no damage. You must pray to your god during a long rest to regain this ability.