The Tigers warmed up for their French test with a resounding 36-8 victory away to Northampton Saints and Croft believes they have the momentum to take on the Top 14 pacesetters.
"We always look to build on our performance from the previous week, like we did from Exeter to Northampton and like we will from Northampton to Toulon," he said.
"If you look at their sheet they have some big names, some 'rock stars' on there, but we have got some world-class players from 1 to 23 as well."
Jonny Wilkinson is one of those world class names and he and Toby Flood - former Newcastle Falcons team-mates - are set to go head-to-head for the first time with the club who walk off the winners taking on Saracens or Ulster in the semi-finals three weeks later.
The England international outside halves and firm friends have never faced each other in a match with Flood declaring "it will be enjoyable, I think it will be fun to come up against him.
"These games, at a place like Stade Mayol, playing against guys you know like Delon and Steffon Armitage and Jonny are great.
"Toulon control territory very well and will aim to build momentum, and Jonny will orchestrate that.
"He will want to play quick, on top of us. Any time their momentum stalls, he will just take two or three steps back, drop it on to his right or left foot and bang it through the posts.
"He looks just as sharp as he was in the past and just as hungry. He's hitting more breakdowns in a game than most 10s do in a week! As he said when he spoke about wanting to continue, it is all about whether he can still give something to the side.
"He's always been like that, thinking about what he can give, not what he can gain. He is definitely giving something to that Toulon side, and that is what matters to him."