Don’t show loop when userrole = x // Possible?

Hi there. I was wondering if you can help me figuring something out. I run a directory and want to setup things the way that IF a post is written by a directory-user THEN don’t show other directories next to it.

so i guess the best condition would be to create a condition based on a user role because my premium-directory-users all have a new user-role I created.

do you know how this could be done?