The Arsenal forward says his side will not underestimate Portugal but is convinced their "confidence, conviction and power" will ensure victory on Monday
The Group G favourites go head-to-head in their World Cup opener in Salvador, with Paulo Bento hoping to be able to call upon his captain after the Real Madrid star insisted he had shaken off his injury problems during the past week.
Podolski is wary of Ronaldo's potential to turn the match on its head with a moment of brilliance but is supremely confident in Germany's chances of starting their campaign with a win.
"But if we play well then I think there's no doubt that we're capable of winning the game. Our aim is to start off with a victory. That's why we flew all the way out here.
"We've developed as a team and that's exactly what we want to show at this World Cup. We'll go into the match with confidence, conviction and power and we will win it."