I think Inter will win Bayern Munich. Inter is an underrated team. They know how to suffer and still win. Bayern Munich is an attacking team, but their defence is not that decent, while Inter on the other hand can hold off a good attack.
My money is on Inter to make it to the semi-finals and meet Barcelona.
In my opinion, Dortmund is an easier opponent for Barcelona than Lille. Dortmund is a team without an exceptional defence and is very attacking. They concede a lot so that won't be a problem for Barcelona.