My iPhone displays: Use iTunes to restore, but once in iTunes does not let me NOT to restore it

Hello - I connected my iPhone earlier since a pop-up message showed up saying that I needed to back up my information in iCloud, once I connected it to my iTunes, it was taking more than 2 hours to complete, I decided to disconnected in the middle of the process, and I was not able to use it anymore, and it only displays: Use iTunes to restore. I connected it again, but it does not do anything. Another message comes up in the iTunes screen saying that in order to use the iPhone in iTunes it needs to be restored. That is not my intention, but it does not let me do anything else. Does anybody know what to do please?

Thank you a million!