Imam-ul-Haq was 18 not out and Haris Sohail 39 not out.
But, in truth the damage had always been done by a pair of top-order slumps that saw England, so often dominant in early-season home conditions, dismissed for 184 in their first innings before declining to 110 for six second time around.
A seventh-wicket partnership between Jos Buttler and Dom Bess of 126 had briefly raised English hopes that they might do the unthinkable and emerge from a match which Pakistan had dominated without defeat but that was distinguished within the opening 25 deliveries of day four as Pakistan took the remaining four English wickets to fall.
Rewind to day one and Pakistan captain Sarfraz Ahmed's words were that he "wanted to bowl first".
England, resuming on an overnight 235 for six, lost their last four second-innings wickets for a mere seven runs in 18 balls on the fourth morning to be bowled out for 242. Root said his team "did some really good things leading into this week" but cautioned that it will take time for the changes in preparation and mindset to bear fruit. We dropped chances. I though the bowlers created a number of opportunities. "We know we are underperforming and that is very hard to take".
Meanwhile the recalled Hasan, who did not play in Pakistan's win over Test debutants Ireland in Dublin concluded last week, took four for 51 in 15.2 overs.
"It would be very easy going into next week feeling sorry for ourselves and thinking that there is no way forward, but there absolutely is", said 27-year-old Root. It was they who made the most of the bowling conditions to skittle England for a modest first innings score, they who refused to succumb to the panic of yet another batting collapse every time they lost a key wicket and they who produced an all round team performance to comfortably outplay underprepared-looking opponents.
Buttler was then 66 not out and Bess 55 not out. Mark Wood fended at the ball, which was angled away, and edged it to Sarfraz who grasped a simple catch.
It was the latest memorable Lord's incident for Amir, who took six wickets in a Test innings at MCC's headquarters in 2010 - the same match where his involvement in a spot-fixing scandal led to a jail sentence and a five-year ban from cricket.
The innings ended when Amir knocked over Bess´s off-stump as the batsman went to drive.
Buttler fell in the second over, trapped lbw by man-of-the-match Mohammad Abbas for 67 and failing to get the decision overturned on review.