Beans, lentils, brown rice, wild rice, vegetables like asparagus, broccoli, yams, brussel sprouts, garbonzo beans, especially Mushroooooooms....cancer patients should have healthy servings of fats like hemp oil, coconut oil are the two best...flax seed is ok too but can deplete you of certain omegas over time.
Protein should be augmented if needed using organic based protein powder. Animal proteins should be limitted but having chicken once a week, organic or wild fish once a week, and even an organic rib eye once a month isn't going to make a difference in your outcomes...if your diet is depressing then that is just as bad as a unhealthy diet.