The Croatian international suffered a minor groin strain during the first half of extra-time in Rome and will miss the clash with Blackburn Rovers this weekend.
“Unfortunately we have lost Eduardo with a groin problem,” Arsenal manager Arsene Wenger told Arsenal TV Online on Thursday.
“He got it in the first half of extra time and I wonder if that stopped him from taking his penalty that well.
“It shows you that no matter what you do in training when you go to the uncontrolled movements of top, top level competition your body needs time to adjust. It is only a short-term injury but he is out for Saturday.”
