It does not matter if Real Madrid sack Rafa Benitez or not. This is not a point at all. If Real Madrid lose to Shakhtar after two defeats in La Liga and after the humiliation in El Classico, that will be the final nail in the coffin.
With all the discontent of the leaders of Madrid with Benitez, they will band together and win against Shakhtar. But I think that the Ukrainian side can score. They scored a lot against Malmo in their last Champions League game. And Real Madrid concede a lot and now they are playing away.