However, Capello wants his team to retain its focus and edge against a team which has one point from two matches, having drawn at home with
"Nine points is a great start, but it's only the beginning of the qualifying," Capello told the Rossiya 2 television station.
"It's a good start, very important in terms of psychology, important for the team and the fans. But now we must fully concentrate on Tuesday's game.
"Many think that this game would be easy, but I have a different opinion. I'm sure that
The Real Madrid superstar
He is also in irresistible form this season, with 14 goals in 11 club outings to date.
The shoulder injury that threatened to delay his landmark appearance is not as bad as initially feared and he is now certain to start at the
Ronaldo could be expected to fill his boots against a side ranked 117th in the world, but coach
"As for the Northern Irish, I have said they are an aggressive side, especially defensively," he said.
"They are an aggressive team and a strong team, very tough in one on ones and duels and they have a good spirit, which is typical of the Irish."
Northern Ireland, like
The latter travels to
South Korean media blamed Iran for angry scenes at a tense FIFA World Cup qualifier which ended with fans pelting debris on to the pitch and the visiting coach under fire for a rude gesture.