ISRAELI TROOPS killed four guerrillas in a nighttime gun battle in southern Lebanon, the army said Saturday . . . A SAUDI PRINCE and an Orlando, Fla., area luxury hotel have settled a legal dispute over a bill of more than $20,000 in room charges and damage that included ink stains and scuff marks on the wall . . . A FIRE in a crude-oil processing unit at a Port Arthur, Texas, Chevron refinery Saturday slightly injured two workers, a plant official said.