A psychic resistant enemy rolls 40 psychic damage… Does the enemy lose 40, 20 or 10 HP?

@JeremyECrawford A psychic resistant enemy rolls 40 psychic damage against a Thought Shield-ed warlock. Does the enemy lose 40, 20 or 10 HP?

— Millstone85 (@Stonemill1985) November 16, 2016

Thought Shield doesn't deprive your foe of resistance to psychic damage. (In the example, the resistant enemy takes 10 psychic damage.) #DnD https://t.co/YSfCu1HCIJ

— Jeremy Crawford (@JeremyECrawford) November 16, 2016