Hailing the 'attention to detail' of his boss, Cohen told the official NFFC website: "Everyone was sure of their jobs and we knew if we were going to concede it was either going to be because of a bit of magic or some bad fortune."
Leicester manager Nigel Pearson felt his side were guilty of 'not being efficient in either box' although he thought the hosts could have taken something out of the game.
Having climbed back up to 5th in the Championship table, Forest now enter the international break in high spirits before a home game against leaders Burnley on 23 November.