Goals from Shaun Wright-Phillips, Didier Drogba, Michael Essien and Andriy Shevchenko clinched an easy 4-0 win at Stamford Bridge on Saturday and put Chelsea through to the quarter-finals.

And the London club will now focus on a Champions League first knock-out stage tie at Mourinho's former team FC Porto on Wednesday, before next Sunday's League Cup final against Arsenal.

"This was a good win, but I think the four-goal scoreline was a bit harsh on Norwich," said Mourinho, who took Porto to the 2004 Champions League title before leaving for Chelsea.

"As soon as I knew the match was won I took off Didier Drogba and Frank Lampard, as they are important and I am always a bit afraid of these matches.

"I want them to be protected, and this week we have two finals. Porto is like a final, and Arsenal is a final.

"When I go to Porto I think I will see a crowd with two faces. Some people will understand why I left, some won't.

"There will be whistles and boos, but you can not delete history, and I won the UEFA Cup and Champions League there."

Championship side Norwich started well, but it seemed it may not be their day from the moment goalkeeper David Marshall twisted his ankle, and had to be replaced by Paul Gallagher.

And when Dickson Etuhu hit the post on 17 minutes, and Khalid Boulahrouz cleared Lee Croft's follow up shot, Norwich manager Peter Grant was certain this would be a tough afternoon.

It took until the 38th minute for Chelsea to open the scoring, as Wright-Phillips hit a shot from the edge of the penalty area which deflected past Gallagher.

The victory was virtually confirmed as Drogba scored his 26th goal of the season on 51 minutes after Chris Brown failed to clear in his own area.

There was concern for Chelsea when Boulahrouz was forced out of the match with a dislocated shoulder, but his replacement, Essien, was immense.

Norwich did have chances to bring the game to life, but Brown missed an opportunity on 70 minutes, and then Petr Cech made saves to deny Croft and 37-year-old veteran striker Dion Dublin.

Shevchenko was introduced to give Lampard a rest, and the Ukrainian was instrumental in the final two goals, which came in stoppage time.

First he set up Essien for a simple tap-in, and then with virtually the final touch of the game, Shevchenko headed home from a Salomon Kalou cross.

"I think it was a case of tired minds for our players at the end," admitted Grant.

"I said we would come here and have a go at them, and I think we did that."Now we have to take the form into the league, as we want to play at grounds like this every week."

Chelsea will now re-lay the Stamford Bridge pitch, as Mourinho is not satisfied with the surface and wants it in top condition by the time Porto visit for what could be a crucial second-leg in two weeks time.

Blues owner Roman Abramovich witnessed this win, following a five week absence, and Mourinho is pleased to have him back at the club.

Mourinho added: "It is his club and he does not have to give explanations when he is not here. He is very welcome back in our dressing room."