Ireland was not colonised. That was an old fashioned European land war.
India had a relatively peaceful transition, considering what it could have become.
You are probably ignoring the Hindu-Muslim riots that took place during partition and the immediate Indo-Pak war after that. These were a result of the british policies.
Ireland's was the first colony, it's a matter of record and to this day protestant settlers descendants inhabit the north of the country. [1]
India's transition was not peaceful.
[1] https://encrypted.google.com/search?hl=en&q=the first colony