Prepare rice according to package directions. Cool. Drain pineapple, reserving juice. Combine pineapple juice, lemon juice and marshmallows in large bowl; mix lightly to coat. Add rice, pineapple, oranges, sugar, and cinnamon; toss lightly. Spoon into individual dessert dishes; chill. Top with whipped topping just before serving . Garnish, if desired.