In a large cast-iron or other heavy skillet, heat oil over medium-high heat. Add garlic and pepper flakes; cook and stir 1 minute. Add roast beef, broth, wine and seasonings; heat through. Place beef slices on rolls; drizzle with broth mixture. Top with cheese. Freeze option: Freeze cooled meat mixture and juices in freezer container. To use, partially thaw in refrigerator overnight. Heat through in a saucepan, stirring occasionally and adding a little broth if necessary.