Magic Wards (5e Feat)
From D&D Wiki
Prerequisites: The ability to cast at least one spell
You can create shields of magical power that protect you or an ally.
You can use your action to give yourself or another willing creature within 30 feet of you a ward which has hit points equal to 4x your proficiency bonus, and resistance to one type of damage you decided when you create the ward.
The ward last until it is depleted or you take a short or long rest.
Once you use this feature, you must finish a short or long rest to use it again.