Finch believes if Kohli, who thrives on emotions, is sledged too much during the pink-ball Test which gets underway on Thursday, the Indian skipper can be "ruthless" on the hosts.
Australia managed to rack up a total of 186 runs on the board with the help of Matthew Wade (80) and Glenn Maxwell's (54) sublime innings.
In the Australia XI, injured captain Aaron Finch, Josh Hazlewood and Mitchell Starc are out.
Mitchell Starc is out with a back injury while fellow paceman Pat Cummins was rested.
Mitchell Starc, who has an outstanding record with the new ball in white-ball cricket, has been far from his best in the ongoing series against India.
Australia skipper Aaron Finch said he does not think David Warner would be available for selection for the third and final ODI.
Australia have been forced to replace injured all-rounder Marcus Stoinis with Moises Henriques.
Both skipper Aaron Finch and top batsman Steve Smith smashed hundreds for the home side.
Finch achieved the feat against India in the first ODI at the Sydney Cricket Ground.
Mayank Agarwal will open for India alongside Shikhar Dhawan in Rohit Sharma's absence.
Kohli averages close to 60 in all ODIs and 50 in 50-over matches in Australia.
The South African raced to his fifty in 23 balls as KKR cruised to 83 runs from the last five overs to prop up the total.
Ashwin was seen giving a warning to Royal Challengers Bangalore opener Aaron Finch in Dubai on Monday after the batsman had backed up too far at non-striker's end.
On Monday, during RCB's chase of 197, Ashwin stopped short of his run-up to warn Finch about stepping outside the crease a little too early.
Padikkal's innings was studded with five boundaries and two sixes and a good stand of 62 runs for the third wicket with De Villiers.