The Belgium international helped Andre Villas-Boas' side secure a Europa League last-16 double-header against Inter Milan with a late leveller in Lyon on Thursday to seal a 3-2 aggregate win.
And his attention is now turning to Monday night's Premier League London derby at West Ham with fourth-placed Spurs needing the win to restore the four-point lead over rivals Arsenal ahead of next weekend's north London showdown at White Hart Lane.
Spurs blew a 10-point lead over the Gunners last season to end up missing out on third place and subsequently Champions League qualification when Chelsea won the trophy against Bayern Munich in May which meant fourth spot was not good enough.
However, Dembele feels Spurs are a different proposition these days and he claims their unbeaten league run stretching back to December proves they are brimming with confidence.
"We don't have to fear any team," said Dembele.
"People have respect for us. If you're in a winning mood it's important in the league.
"We have two more very important games coming up in the league so the confidence will stay high and that's good for us."
On the Hammers trip, he added: "It will be a physical game, for sure, but we are used to it and this is a special match for us and the supporters too because it is a derby."
Punters can use their free bet to back Spurs to finish the season in the top four and add the Europa League trophy to the White Hart Lane trophy cabinet.