The son of Lawman, owned by Sale h Al Homaizi and Imad Al Sagar, stepped up on his debut and was suited to the drop down in trip.
He made every yard of the running in the hands of Andrea Atzeni, sticking his neck out gamely up the hill to win by a length and a quarter.
Roger said: "Musaaid is a lovely colt. It has worked dropping him him down in trip and letting him use he long stride. He is a big horse and there should be plenty more to come from him."
Musaaid (middle) works on racecourse side this spring