How to disable CF caching per file?

Question

cloudflare

Hello!
There was a situation when it is necessary to disable the redirect only from 1 file on the old domain - robots.txt.
But the fact is that for different user-agents it shows different files, and CF caches for everyone the one that will be opened first.
Is it possible to disable caching of only this file on CF?
I know that this is done in Page Rules, I chose cache level: bypass for the file there - there is no sense, I'm stupid ...
Thank you!

Answer 1

that's right, page rules
order only