What happens next?

How to stop a fearful cat from biting
Act calmly.
Do not respond wildly to a cat that is biting you out of fear. If you act out in shock and pain it is likely that the cat's fear will increase and its biting will increase in response.
Instead, take a deep breath and move forward calmly with a plan to get the cat to let go. It can be hard to not respond strongly to a cat bite that you don't see coming.