For the duration, you have resistance to psychic damage, as well as advantage on Intelligence, Wisdom, and Charisma saving throws. Willing creatures of your choice that you can see also gain this benefit while they are within 10 feet of you.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the area in which you can effect creatures increases by 10 feet for each slot level above 3rd.