Feel free to use flank steak or even thinly sliced sirloin instead of the ribeye stake; just make sure the meat is sliced thinly for the best texture.
To make this dish even more filling, add some thinly sliced carrots or bell peppers to the pan before cooking; they will roast up nicely with the beef.
Marinade time can be flexible - even a quick 5-minute soak can work, but best to let the beef sit for up to an hour to really deepen those flavors.