Joe Fanning who rode Universal lead from early on and rarely look troubled as he landed the Princess of Wales’s Stakes, beating Ahzeemah and Cavalryman to the finish.
Graham Lee on Maputo won the big handicap on the first day of the meeting.
Earlier in the day, Feel Like Dancing took the opening Bahrain Trophy.
Following Universal’s win, Johnston was quick to state that his four-year-old colt could well be in contention to ride in the £1 million King George VI and Queen Elizabeth stakes at Ascot on 27 July.
"He really does thrive on his racing. I didn't think he had a particularly hard race there and he is holding his condition very well, so the King George could be on the cards," said the Scot.