Pakistan had won the toss and skipper Shoaib Malik elected to bat first, setting Australia a target of 285 to win, anchored by Mohamed Rizwan’s maiden ODI century.
Australian fast bowler Jhye Richardson, who struggled to find rhythm in the first game, castled Imam-ul-Haq for a duck in the first over and then got rid of fellow opener Shan Masood, caught at mid-wicket, to leave Pakistan two down for 35.
Richardson completed only half his quota of overs, however, after he was forced off the field when he dislocated his shoulder while trying to save a boundary. The 22-year-old did not return and was later seen with his arm in a sling.
Finch stepped up to bowl in Richardson’s place and he picked up only his third ODI wicket when he had Haris Sohail caught behind for 34. Umar Akmal (16) also departed cheaply when he holed out to Peter Handscomb in the deep trying to attack Nathan Lyon.
Rizwan, who was promoted up the order, steadied the innings with Malik, who scored 60, as they notched up a 127-run partnership for the fourth wicket until Adam Zampa got Malik caught at long on.
Rizwan departed for 115 in the 47th over when he tried to accelerate the innings, caught at the long-on boundary off Nathan Coulter-Nile by a back-tracking Glenn Maxwell, who had to throw the ball back in to avoid stepping outside the rope.
The win was Australia’s fifth in a row after their 3-2 comeback in the series in India earlier this month. The third match of the five-match series will be played on Wednesday in Abu Dhabi.