Ulster's Alan O'Connor has warned that the province cannot afford to be anything but at their best when Exeter Chiefs visit Kingspan Stadium on Saturday night.
After surrendering a late lead against Bordeaux-Begles last weekend, Les Kiss's men need a victory against their Aviva Premiership counterparts to keep their European hopes alive and Dubliner O'Connor is under no illusions about the task.
"The European standard is top of the table. If you are playing against any good team and you are not firing on all cylinders, you're not going to win the match.
"It's a special feeling running out here and a special feeling going away to France and playing big European games. It is something you're very proud of and you just hope you can bring the goods on the day.
"We need to start well and finish well. They will be coming all guns blazing after their loss so we have to match that and take it to them."