Drain liquid from orange segments and pineapple into 13x9-inch (3-quart) glass baking dish. Set fruit aside. Sprinkle gelatin over liquid; let stand to soften.
Meanwhile, bring fruit juice blend to a boil in large saucepan.
Pour boiling juice over softened gelatin; stir until gelatin is dissolved. Add frozen strawberries; stir until gelatin begins to thicken, breaking up berries with spoon. Stir in reserved fruit and bananas. Refrigerate at least 2 hours or until set. Cut into squares to serve.