What happened during the Roman Reigns vs. Rey Mysterio Hell in a Cell match on Smackdown

On the June 18th 2021 edition of WWE Smackdown, Roman Reigns defeated Rey Mysterio inside Hell in a Cell to retain the Universal Title. Mysterio used various weapons to gain the upper hand early in the match including a chair and fire extinguisher. Reigns ended up powerbombing Mysterio out of the ring into the cell wall and then won the match with a standing guillotine submission. After the match, Jimmy Uso raised Reigns’ hand and Reigns attacked Mysterio again.