Stand-in skipper Dirk Kuyt, Jay Spearing and Voronin all went close at the other end but Cavalieri was the busier keeper.
The Brazilian had to be alert to push behind Endre Fotland Knudsen’s curling effort and from the ensuing corner he reacted smartly to tip Ihugba’s 30-yarder past the post.
Kelly’s perfectly timed last-ditch tackle denied Angan another clear run on goal before the Reds finally started to take control.
Lyn were indebted to keeper Tyrel Lacey as first he pushed a drive from the enterprising Lucas over the bar and then he was off his line smartly to smother Kelly’s low shot.
Liverpool began to get in behind the home side with increasing ease but after latching on to Kuyt’s perfect pass Voronin failed to hit the target.
Lyn were cursing their luck eight minutes before the break when Jo Inge Berget finally got the better of Cavalieri but his effort came back off the post.
The Reds responded positively to that let off and ended the first half strongly.
Voronin’s clever chip from the edge of the box was tipped over by Lacey and Kuyt somehow conspired to nod Babel’s cross wide at the back post with the goal at his mercy.
The breakthrough finally arrived on the stroke of half-time and Babel was again the creator.
The Dutchman got to the byline and delivered a perfect centre for Voronin to nod home.
Benitez rung the changes at the break with Albert Riera, Yossi Benayoun, Philipp Degen, Javier Mascherano and Damien Plessis all coming on.
The Reds continued to press and just before the hour mark they doubled their tally.
Andrea Dossena got the better of Erling Knudtzon down the left flank and his cross picked out Ngog who coolly fired past Lacey.
The next raft of subs sparked the biggest cheer of the night as Gerrard and Fernando Torres came on along with Emiliano Insua and Daniel Ayala.
However, the expected goal rush didn’t happen.
Lyn briefly threatened a fightback and Cavalieri had to be alert to thwart Angan after he burst through the middle.
The Reds keeper didn’t put a foot wrong before being replaced by Peter Gulacsi late on.
During a disjointed last half hour chances were at a premium as both sides struggled to keep possession.
Kelly enjoyed another solid display and showed his versatility in the second half after switching to right back. He got forward well to offer support in attack and almost added a third with a low shot which flew just past the post.
Benayoun forced a save from substitute Arnar Darri Petersson late on but in the closing stages the keeper was rarely troubled.
