Pakistan had beaten Australia 2-0 in their last Test series in the UAE in 2014.
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.
If an lbw appeal shows the point of impact between the stumps and pads is more than 2.5 metres, an umpire's decision can not be overturned.
Yasir looms as a major weapon for Pakistan with the pitch already showing signs it will deteriorate late in the match. Follow Australia's new home of cricket on Facebook,Twitter,Instagram and catch all the highlights, features and interviews on the 7Sport app.
Australia's most prolific offspinner continued to ask questions of the Pakistani openers but Holland made a nervous start to his Test return, going for eight off his first over and conceding an Imam six over midwicket in his fourth over.
After resuming on 255-3, Pakistan lost only nightwatchman Mohammad Abbas (1) in the morning session as Sohail and Shafiq blunted the visiting attack.
It was a welcome change of fortunes for Lyon after he was earlier foiled by the DRS.
Sohail and Shafiq are unbeaten at 46 and 43 runs respectively.
Sohail was on 51 when he advanced down the crease and padded away a Lyon delivery, prompting an appeal which umpire Richard Illingworth dismissed.
Peter Siddle provided the breakthrough for Australia as he clean bowled Mohammad Abbas for one run.
"I would've taken it after four overs, so I'm about an hour-and-a-half out", former Test batsman Mark Waugh said on Fox Sports.