If you’re an Arby’s roast beef lover, the Junior Roast Beef Sandwich is a great option at only 270 calories. If you’re trying to stick to a lower calorie meal, you should stay away from the cheddar sauce. To add to your meal, switch out those curly fries for a caesar salad or garden salad w/o dressing. Just make sure if you decide to add dressing to be conscious of fat and calories in the dressing.