The men from Rodney Parade are currently top Pool 1 and head into the weekend’s clash two points ahead of their French opponents after beating 31-17 them in round one.
The South Wales side go into this game knowing that if they win, they will secure qualification to the knock-out stages. Jones knows what’s at stake for Dean Ryan’s side.
He said: “It is a massive game – we are out in France against a huge team.
“We know exactly what is coming, so we need to go out there and put our foot forward and put our best performance on the field to come away with the result.
“When we played them at Rodney Parade, we learned that speed was key. It’s a team that is so big and physical that you must move around them and be quicker.
“They will be fully loaded playing at home and after their performance against Toulon last week they will be looking to put out a fully fit team against us.
“We know what challenge is ahead of us, but we’re going to go out there and give it our best shot.”
The Dragons expect to have Wales lock Cory Hill and wing Ashton Hewitt back at their disposal after both men were late withdraws from their Guinness PRO14 win over the Ospreys last week.
Hill was absent due to illness with Hewitt nursing an ankle problem, but both players are on the road to recovery and could be selected for this weekend’s clash.
The Dragons will be missing full-back Will Talbot-Davies. He faces a spell on the sidelines after he dislocated his wrist against the Ospreys.
Jones said: “Will will be struggling for this weekend as he dislocated his wrist. He won’t be available for the match on Saturday. I think the other boys who pulled out late will be available so that is pleasing news.
“Cory was run down with the flu. You can’t be too careful with those things, but we would like to get him back in the mix.
“We’re also very fortunate in our back-row as we have got a lot of home grown talent that has done well which is pleasing to see.”