Block referal URLs

Website, Application, Performance Security Center
1

What is the name of the domain?

surdelsurcom

What is the issue you’re encountering

I cant find the way to block referal sites with one rule

What steps have you taken to resolve the issue?

I tried several ways to wright a path with regex but they cause error

2

Hi all,
I want to block many referal URLs with one thing in commun.
They all finish with:
example.com/some-text-k.html
Many, many differente domains, the only thing in commun is that they end with
-k.html
I tried to use regex but obviously it wasn’t correct
Anybody could help?
Thanks