Roy and Bairstow's stand fizzled the spirit out of the Aussie bowlers.
Martin Guptill pulled off an awe-inspiring direct hit to dismiss MS Dhoni and dash India's hopes one final time.
Rohit Sharma became the first batsman to score five tons in a single World Cup edition.
Bangladesh tried their best and got really close but still fell short of the Indian challenge by 28 runs.
Rohit Sharma's century and Shami's five-wicket haul went in vain.
Imad Wasim absorbed the pressure and took Pakistan to number four in the table, above hosts England.
The Windies batters had very little clue about what was dished out by India's bowlers.
As South Africa's dream of winning the World Cup was shattered once again, AB de Villiers posted the lyrics of an Indian song.
With this defeat, the Proteas have been knocked out of the tournament.
Mohammad Nabi kept India at bay for a significant amount of time with his resolute half-century.