Full-time from The Den
Striker partners Philpot and Pavey hit a goal each in the second-half as Justin Skinner's charges recorded back-to-back U23s Professional Development League wins for the first time this season.
The match also saw Shaun Hutchinson in action for the first time since sustaining a hamstring injury in August, and, as planned, the defender played the first-half of a competitive match.
Philpot's effort midway through the half came moments after Kris Twardek's downward shot bounced up and was gathered under the crossbar by keeper Huffer.
United left-back Tom Pearce had a free-kick comfortably saved by Girling in the dying seconds of the half after he had been fouled by Paul Rooney - earning a yellow card for the Millwall centre-half.
It took just five second-half minutes for Skinner's side to break the deadlock. Pavey did well to work an opening and squared for strike partner Philpot, who produced a cool finish to slot home from six yards.
Leeds tried to engineer an equaliser and it twice took some sound defensive work by Noah Chesmain to clear dangerous crosses from Pearce and then clear from Stokes as the visitors pressed.
The game really started to open up as the second-half wore on with the two teams trading scoring chances. At one end a tantalising cross from left-back Chesmain was inches away from the heads of Philpot and Pavey, whilst at the other, Leeds' Samuel Amissah contrived to lash over the bar from point-blank range.
However Lions midfielder Eze Ebuzoeme made an instant impact and within seconds of entering the fray as an 81st-minute replacement for Harry Donovan, the sub chipped an exquisite ball that Pavey headed into an empty net.
Billy Whitehouse tried his luck from distance with an effort from fully 30 yards, but his effort did not trouble Girling in the home goal.
In fact the hosts could have added a third goal in injury-time when Philpot broke through clear on goal, but under pressure from the Leeds defence, saw his shot trickle past the post.
Scorers: Philpot (50mins), Pavey (82mins)
Leeds United: Huffer, Taylor, Pearce, Diagouraga, McKay, Vann, Whitehouse, Murphy, Stokes, Oduor, Amissah. Subs not used: Richardson, Haidara, Nicell, Viera.
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