The Saints kept their fifth-straight clean sheet in all competitions to come away from their second Europa League Group K fixture with a handy point.
The result has the Premier League club sitting top of their group, equal on points with Hapoel, and one clear of Sparta Praha who defeated a hapless Inter Milan in the Czech Republic.
"I think that shows the team spirit at the moment," van Dijk told southamptonfc.com after the helping the team keep their fifth-straight clean sheet.
"It was a tough game and we knew before the game it was going to be tough with their fans behind them, and they've got a couple of quality players as well.
"We go home with a point, and I think we can be a bit satisfied as well with that. Obviously, we want to win, but I think overall we can be proud.
"It's a strong start, and I think the good thing is that we didn't lose, and for the confidence of the team that we kept a clean sheet again.
"Obviously, there are a lot of things we need to do much better, especially in the first half, but we kept a clean sheet, we take a point after a long journey and everybody can be proud of themselves I think."
The Saints will return to European action on October 20 when they take on Inter at the San Siro when Hapoel and Sparta clash in Beersheba.