By Enas Alashray and Mrinmay Dey July 6 (Reuters) - Iran's Revolutionary Guards fired at least two missiles at commercial ships transiting through the Strait of Hormuz on Monday night, Axios reported, citing two U.S. officials. Two commercial ships suffered significant damage but had no casualties, the report said, citing a U.S. official. Separately, Britain's maritime security agency said a tanker caught fire after being hit by an unknown projectile east of Oman's Limah early on Tuesday.