Flank Steak With Onions and Peppers

4 cups cooked rice (I use instant rice, white or brown) 4 teaspoons canola oil 1 1/4 lbs flank steaks, thinly sliced 4 large assorted bell peppers (any color)[...]

2 medium red onions , sliced 1 large red bell pepper , 1/4-inch strips 1 large green bell pepper , 1/4-inch strips 1 cup tomato juice 1 teaspoon lemon peel ,[...]