Heavily plant the surface of the tank. Floating plants will create hiding places for the bullied fish and heavily planted tanks help make the fish feel more comfortable. Also, Mollies do best with a trace of standard aquarium salt added to their tank water. It also has a calming affect on them. A teaspoon in every 5 gallons of replacement water is enough. This amount won't affect the plants. Hornwort, Anacharis, Water sprite and Pennywort are all fast growing floating plants. They'll definitely help with the problem.
"Fear not, my young apprentice. Just change the tank water."