Hlompo Kekana and his teammates will be out to win when they visit Egyptians giants Zamalek for a Group B clash on Sunday.
But they know that keeping a cleansheet is the key to success away from home.
Downs lead Group B with three points while Zamalek are second with the same number of points.
Nigerian outfit Enyimba FC are at the bottom of the group with no points.
Kekana knows Sundowns will have to fight to get any points in Cairo.
The Bafana Bafana midfielder says: “It’s going to be fireworks. They are a big team and they have experience playing in this competition.
“If you look at their history, they are huge.
“We are underdogs and they are playing at home. We have to make sure that we don’t concede. If we don’t we will have a chance to win.
“We will create chances but we need to take them.
The Brazilians have been working on strategies and tactics as to how to overcome a side that has won the Champions League five times.
Kekana adds: “Preparations are on course. The boys are preparing well and they are happy and ready for Zamalek.
“In this competition, you stand a great chance if you win all your games so we have to focus.
“We have to collect the points. If we don’t win the match, the worse we can take is a draw. We are very determined.”