I agree with you about the 2nd goal, I think Cech was at fault with his body position there. But the first goal, that was just simply a top quality free kick that any goalkeeper would struggle to keep out. It placed perfectly into the top corner, those are a difficult to stop, and Cech's not exactly small. Wouldn't fault him for that.
I blame more the team for giving away a daft free kick like that, right on half time. It changed the tone of the match after that.