The Gunners showed little sign of an inferiority complex when the sides clashed 13 days ago, and the French full-back is adamant that a similar approach will see them through to the Quarter-Finals.
Confidence is high in the camp, despite a recent downturn in results, largely due the way Arsenal dealt with the defending European champions first time around.
"We played well against them at Emirates and we know we can beat them," Sagna told the Arsenal matchday programme. "We are confident we can win, even if they are the holders and have won the title a few times in the past few years.
"I think we surprised them at Emirates, especially in the second half, so we can do that again. If we play our usual passing game, we can win.
"There will be no special instructions. I think it's best if we just play our normal game, play how we want to play and not be scared. We need to win so we can't be scared of conceding when we look for the goals.
"We need to play well focus on scoring and we will try to score before they can and that will make the game much easier for us."
Sagna has a special incentive to succeed. The first-leg was his first appearance for the Club after the sudden death of his brother Omar.
"Everyone at the Club gave me the support and that helped me so much," he said. "My father told me as well to come back and play in that game. So that is why I came back, I had to keep my head high.
"It is difficult to talk too much about it, but I really want thank everyone at the Club for what they have done for me in the past few days."Copyright 2017 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source