Cynthia Bailey & Peter Thomas Sued Over Bar Fight

The bar patron who claims 'RHOA' star Peter Thomas assaulted him says the case was rigged in Peter's favor thanks to doctored video ... according to a new lawsuit.

In the docs, Brandon Link claims Sports One Bar staffers and/or Peter tampered with surveillance camera footage of the incident. He also says Peter barked he was busy "working on some p****" ... when Link tried to talk business. According to Link, Peter screamed, "Do you think I give a F*** about your money!!" ... then threw Link into a chair or table.

The D.A. disagreed after reviewing the surveillance video and dismissed the criminal case.

Link insists he suffered a concussion. He's suing Peter and his wife Cynthia Bailey for $225k in damages.