The 20-year-old was in the side that surrendered an early 2-0 lead in Dingwall to lose 3-2 in March, with Steffen Wohlfarth grabbing the winner for the hosts in added time.
The young midfielder admitted it was a painful memory and he does not want to dampen the party atmosphere around the club with a similar result in the Highlands on Sunday.
"I started that game and we were up 2-0, but we lost sloppy goals and they came back and ended up beating us in the last minute," he told this week's Celtic View.
"Hopefully we can go up there, turn it around and get a positive result. They are big, physical and a good team. They have good players. When we were up there, the pitch wasn't the best either. We know it will be a hard game but hopefully we can get the three points.
"We want to enjoy the run-in ahead of the Scottish Cup final and we also want the fans to enjoy celebrating the title. It's a good time to be part of the club."
McGeouch has featured 13 times, scoring one goal, this season after eight appearances and his first Celtic strike last term, says he would play anywhere for his boyhood idols.
"Really, I will play anywhere," he added. "Growing up as Celtic fan I will play anywhere for the team - I would play in goals if I needed to.
"It's just about getting in the starting XI and being part of the team. I have always played as a central midfielder throughout my teens so that's probably my preferred position but I'm happy to play anywhere so I am involved."