Redknapp was proud of his team's achievement which sees them top Group A ahead of Inter Milan.
Redknapp said: "It is fantastic for us to get through, that was a difficult group when it was drawn although it didn't look it tonight. I think they lost a little bit of heart.
"Overall I think we've done very well.
"We want to win it [the group], you want that top spot if you can get it.
"It looks as though most big teams will finish top of their group so it's important if you can finish top."
The north London side visit FC Twente in their last match with Rafael Benitez's Inter travelling to face Bremen and Redknapp is relieved his team have already qualified.
"They are a good home side but we are looking forward to it, it's nice to go there and give it a go without too much pressure," he said.
"You don't want to go there needing a result to qualify.
"It was a good performance tonight: we didn't get stretched defensively but when we did I think William Gallas was outstanding. He has brought an awful lot to the team.
"There were some great performances from everybody and I've been delighted with all of them."