Http flooding path

Helo. I have a problem as my website is under attack for two days. Http flooding is smash my hosting. Now hosting provider suspended my hosting till I start organise help.
I have huge attack to /my-account path

Set-up a firewall rule for it, here are the docs.

Thank You for reply.

I have same rule, however i am not advaced . R U able to help to solve the problems?

A screenshot of the rule would be more helpful.