The Tangerines threatened again when Daly headed down for Gomis to nick the ball wide.
It took France coach Raymond Domenech 70 minutes to make his first substitution, Bafetimbi Gomis replacing Anelka.
Leading 3-1 from the first leg Lyon began well, but striker Bafetimbi Gomis headed over from point-blank range.
However, Gomis was lurking in the area to fire into the roof of the net and make it 2-0.
Daly headed over from a Morgaro Gomis cross moments later as Craig Levein's side looked for an early goal.
Robertson came on for Morgaro Gomis and sealed the points for the home side, arriving late to convert Goodwillie's cross.
Morgano Gomis and Feeney were also denied by the impressive Cerny as a tiring Hamilton held on for maximum points.
However, Jimmy Calderwood's side were again undone by sloppy play as Gomis knocked in United's fourth goal on 77 minutes.
United had the better of the chances but missed the composure of suspended pair Morgaro Gomis and Prince Buaben in midfield.
United looked a different proposition after the break, with David Robertson, Morgaro Gomis and Goodwillie all proving a handful for the hosts.
Further cautions were issued to Dundee United's Morgaro Gomis and Hearts' Lee Wallace, the latter following the foul that led to the home side's opener.
As well as Lisandro, Aly Cissokho was purchased from Porto, Brazilian Michel Bastos came in from Lille, and France forward Bafetimbi Gomis arrived from St Etienne.
Morgaro Gomis found himself in space wide on the left 10 minutes before the break but his rasping drive failed to trouble Hibs keeper Mark Brown.
United went close to a second when a low drive from Morgaro Gomis struck the near post and rebounded off the back of Langfield before slipping wide.
The visitors were level four minutes from time, however, when substitute Gomis struck a stunning strike high into the net after David Robertson's cross was only partially cleared.
United's Morgaro Gomis picked up the game's first booking after 20 minutes for a foul on Kenny Miller as Rangers kept up the pace, with Craig Levin's side only threatening in flashes.
United swapped midfielder for striker, with Morgaro Gomis coming in for the suspended Jon Daly, while it was the opposite for Celtic, with Stokes replacing the rested Ki Sung-Yeung in the starting line-up.
After Lyon's Michel Bastos fired two speculative free-kicks wide and striker Gomis headed over when he should have scored, the hosts began to stamp their authority on proceedings in front of a partisan home crowd.
Bafetimbi Gomis lobbed in the fourth after heading the ball past Debrecen goalkeeper Vukasin Poleksic early in the second half, as Lyon established a three-point lead over Liverpool and Fiorentina at the top of the group.
United sealed the victory with a third goal two minutes before full-time, when substitute Dale Hilson sent the ball into the near post from the right and Gomis touched home his second and his side's third goal.
应用推荐