Pakistan will be without senior batsman Shoaib Malik who was with his tennis star wife Sania Mirza in India for the birth of their first child.
"Malik will join the team on Wednesday but will not be part of the eleven, so we are ready for Australia who are a very strong Twenty20 side," said Sarfraz.
Australia, who beat Pakistan in the group match of the tri-series, need to win 3-0 if they want to jump from their current third position to the top.
Since Sarfraz took over captaincy, Pakistan have won 23 of the 27 matches they have played -- a momentum the skipper wants to maintain.
"We know that Australia have good bowlers like Mitchell Starc, Billy Stanlake and hitters in Chris Lynn and D'Arcy Short so we have to be at our best to beat them," said Sarfraz.
Stanlake took 4-8 in a lively spell in Australia's victory in the tri-series group game.
Australia will also have some fresh players after losing the two-match Test series 1-0 last week, also played in United Arab Emirates.
Aaron Finch and Sarfraz Ahmed hold the series trophy ©PCB
Their Twenty20 skipper Aaron Finch said his team was motivated enough to win the series.
"Pakistan played very well against us in July," said Finch. "We got the better off them in the first game but they battled back in the last two. They are world number one at the moment and they are world number one for a reason."
"They played some great cricket in the last two years in this format so I think it will be a great contest."
Finch played down the bounty of getting to the top of the rankings in case they win all the matches.
"I think any time you play anyone in a different country it's massively important and everyone wants to win," said Finch, who has won eight of the 16 matches, losing the other eight since in charge for four years.
"If number one rankings are on the line or anyone down the list, each game is important. Everyone wants to win. I don’t think they need any motivation than that and we don’t need it."
Sarfraz Ahmed (captain), Fakhar Zaman, Mohammad Hafeez, Babar Azam, Asif Ali, Hussain Talat, Shadab Khan, Shaheen Shah Afridi, Hassan Ali, Imad Wasim, Faheem Ashraf
Aaron Finch (captain), Mitchell Marsh (vice-capt), Alex Carey, Ashton Agar, Nathan Coulter-Nile, Chris Lynn, Nathan Lyon, Glenn Maxwell, Ben McDermott, D'Arcy Short, Billy Stanlake, Mitchell Starc, Andrew Tye, Adam Zampa