Shafiq joined Sohail in the middle and both batsmen were cautious against the Australian bowlers, as Pakistan added just 19 runs in the first hour.
Pakistan vs Australia 1st Test Day 3 Live Cricket Score: Pakistan scored 482 runs in the first innings against Australia.
Australia's bowlers continue to toil in the blazing Dubai heat, with Pakistan veteran Mohammad Hafeez piling on a century in an ominous start to the first cricket Test.
Opener Imam-ul-Haq was unbeaten on 23 while nightwatchman Asif was dismissed for nought, unable to guard Azhar from coming to bat in a crucial stage.
But Australia did well in the last 29 overs of the day with seamers getting the reverse swing and the spinners also finding some turn off the wicket.
It was a total contrast from the pre-lunch session when Australia - resuming at 30-0 - reached 137 without loss with both Usman Khawaja and debutant Aaron Finch defying Pakistani spinners during their resistance-packed stand.
Australia named three debutants with batsmen Aaron Finch, Travis Head and Marnus Labuschagne coming into the team for its first test since the ball-tampering incident at Newlands, South Africa in March that saw captain Steve Smith, David Warner and Cameron Bancroft receive lengthy bans for their part in trying to change the condition of the ball with a piece of sandpaper.
In a spell of 22 balls Asif took four wickets as Australia slumped to 180-5 by tea. Siddle then sneaked one through the half-forward defence of Bilal Asif (12) as Pakistan lost their last few wickets in a heap.
Before Asif´s brilliance Abbas had forced Finch to drive straight into the hands of Asad Shafiq at short mid-on.
"I didn't play test cricket for over two years, but I always backed myself", Hafeez said, after hitting 15 fours in his 208-ball 10th test hundred that spanned almost 4 1/2 hours.
Asif has figures of 4-28 in 17 overs.
Leg-spinner Yasir Shah was unlucky not to be amongst wickets, having dropped Mitchell Marsh off his own bowling for two and wicketkeeper Sarfraz Ahmed missing a stump in the first session with Khawaja on 17.
Meanwhile, Wahab Riaz returned to the Test team after a one year gap as the second fast bowler in the team.