Their only try came six minutes from the end when replacement scrum-half Colin Ellis crossed.
The scrum-half went over in the corner, finishing off Deiniol Jones' powerful break down the wing.
Peel, 27, has been rotated in the Sharks' scrum-half role with England international Richard Wigglesworth.
One of them, 21-year-old Harlequins scrum-half Danny Care, said he was shocked at getting a call-up.
Alongside him at half-back is scrum-half Pietro Travagli, who will win his third Italian cap.
Scrum-half Ricky Januarie, who spent three months with Welsh region the Ospreys this season, also starts.
Sale scrum-half Richard Wigglesworth joins Vainikolo, Cipriani and Croft as the uncapped members of the squad.
Marshall, their leading scrum-half, will be playing friendly games against Japan XVs on Wednesday and Saturday.
Current Ospreys scrum-half Justin Marshall has first hand experience of the standard of the Magners League.
France's tries came from Thierry Dusautoir and Cedric Heymans, scrum-half Morgan Parra kicking 11 points.
Scrum-half Andy Gomarsall was also optimistic ahead of England's next match against France in Paris.
First, he sent scrum-half Thomas to the sin-bin for not retreating at a penalty.
Scrum-half Chris Cusiter has already returned to Scotland, having failed to shake off a knee injury.
Alastair Kellock will continue as skipper, while scrum-half Rory Lawson again starts ahead of Mike Blair.
Outside-half Nicky Robinson has joined Gloucester and scrum-half Jason Spice has signed for Bristol.
Scrum-half Gareth Jones remains seriously ill in hospital after he was caught up in a ruck.
The second-choice Blues scrum-half has retained his place for Saturday's game against Scotland despite heavy criticism.
But the absence of scrum-half Brent Sherwin will be a massive blow for the Tigers.
Scrum-half Ellis is Leicester's only representative in the 37-man squad for the three-Test series in South Africa.
The introduction of Lions scrum-half Blair for Greig Laidlaw seemed to turn the game in Edinburgh's favour.
As Quins desperately sought a score before the interval, scrum-half Danny Care pulled a drop-goal attempt wide.
And Salford then levelled after a chip-and-chase by star scrum-half Holdsworth sparked the move for Sibbit's try.
Fly-half Ian Humphys and versatile back Sam Vesty are other options to cover scrum-half from the bench.
But immediately from Evans' restart, Quins scrum-half Danny Care picked out Camacho with a perfectly weighted cross-kick.
Scrum-half Morgan Parra makes his first Test start alongside Francois Trinh-Duc who replaces David Skrela at fly-half.
Scarlets full-back Morgan Stoddart and Dragons scrum-half Andy Williams are also fresh faces since the Six Nations.
Leeds, who lost scrum-half Rob Burrow to injury midway through the first half, continued to battle hard.
They installed former England scrum-half Richard Hill as head coach and dabbled in the transfer market wisely.
BBC: SPORT | Rugby Union | Quins must focus on business of rugby
The Scarlets' scrum-half has a shoulder injury that rules him out of Warren Gatland's 24-man training squad.
The Lions, though, had already built a clear lead, inspired by scrum-half Mike Phillips, who scored two tries.
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