Celtic beat Dundee 6-0 in their most recent fixture.
The Bhoys bounced back from a disappointing opening to the campaign to demolish Dundee when the pressure was on, with two goals from Emilio Izaguirre, and strikes from Tom Rogic, Leigh Griffiths, Scott Brown and Nadir Ciftci providing them with all three points.
It was an impressive result, but Deila felt that the team's performance was more important than any individual showing.
"The team spirit was the thing that pleased me most about Sunday's win. It is so important that we work very hard for each other, and I mean all eleven players on the pitch at the same time.
"Everyone did their job, the match-plan was executed and we want to do that for 90 minutes. This is what we did at the weekend.
"It was great to see us score four goals in the second-half. When we have so much possession as we did, we should always be ready to finish off teams in the second-half."
Celtic are trailing Aberdeen in the Scottish Premiership at the moment, but they appear to have responded to the challenge being set to them.
A Europa League draw against Ajax prior to the trouncing of Dundee has raised spirits among Bhoys fans, and there is belief starting to build that this could be another productive campaign.
Celtic made vast strides under Deila last term, but they were failing to show their best over the opening weeks of the new season, and concerns were starting to form around Parkhead.
However, with things seemingly back on track, Celtic will be looking to show their class again when they meet Raith in cup competition on Wednesday evening.