Arcane ward

 You create a magical ward around yourself that protects you from harm. While this spell is active, you have resistance to all damage, and any creature that attempts to attack you must succeed on a Wisdom saving throw againat your spell DC or have their attack miss automatically.

Additionally, if you are targeted by a spell that allows you to make a saving throw to take only half damage, you instead take no damage if you succeed on the saving throw, and only half damage if you fail.

At Higher Levels: if you cast this spell using a 9th level spell slot, you also have advantage on all saving throws for the duration of the spell.