We'll figure it out later

Some things can be pushed aside to deal with on a later date, or in this case about an hour via warping the time around the target to a time where the spell ends.

As an action you can target a creature withing 30ft of you, they become immune to all damage for the duration of until concentration ends. When I'd does inevitably end all that damage that you ignorantly avoided all effects you at once as psychic damage. Idiot.