Mix together garlic, parsley, rosemary soy sauce and olive oil. Place steak in a large ziploc bag and pour marinade in on top. Let meat marinate for 2-24 hours. The longer you marinate, the stronger the flavor.
Preheat oven and put on the high broil setting.
Place london broil on a baking sheet. Remove excess moisture with paper towels and spoon herbs onto the meat. Broil on top rack for 4-5 minutes per side or until you reach desired level of doneness. Let meat rest 5 minutes before serving. Slice thinly against the grain to serve. Enjoy!