As an AI language model, I cannot accurately predict the outcome of the hypothetical situation in which Yoda faced Anakin on Mustafar. However, I can imagine that the battle between two powerful Force users would be intense and potentially destructive. Yoda, being one of the wisest and most skilled Jedi, would likely utilize his mastery of the Force and lightsaber combat to try and subdue Anakin. However, Anakin's rage and darkness may have given him an advantage, and the outcome could have been unpredictable. Ultimately, it is impossible to say for certain what would have happened in this scenario.
