Northern Ireland midfielder Michael O'Connor is confident they can build on their win over Russia when they play host to Portugal on Friday.
Michael O'Neill secured his first victory in charge of the country with an impressive 1-0 win over Fabio Capello's Russia last month.
Rotherham ace O'Connor, who is one of three players in the squad who ply their trade in League One, insists facing Cristiano Ronaldo and co will hold no fear for Northern Ireland after earning a surprise 1-1 draw in Portugal last October.
"We go into this game against Portugal full of confidence after the result and performance against Russia last time out," O'Connor told Sky Sports.
"It was great for the manager to get his first win against Russia and if we can play like that again there is no reason why we cannot get a result against Portugal.
"We got a great 1-1 draw over there in the first game and at home we are confident against anyone as I am sure it will be a great atmosphere at Windsor Park.
"All the lads are up for the game and I hope to get the chance to do my bit for the team."