Taking to Twitter, BCCI wrote: The countdown is down to 1 week now! Get behind #TeamIndia as they are all set to take on New Zealand in the #WTC21 Final."
The 30-year-old said the 2019 50-over World Cup final, where his team lost to New Zealand in the final due to boundary count is not playing on the team's mind as it is a different format.
Indian team will depart from Mumbai on June 2 for a three-and-a-half-month tour of England that comprises the WTC final against New Zealand from June 18-22
Nicholls was a part of the New Zealand team that thrashed India inside three days in two home Tests in early 2020, something that will give them confidence going into the final.
The BCCI has also ensured that the cricketers will get their second dose of the Covid-19 vaccines in England under the guidance of the UK health department.
The Kiwis are scheduled to play England in two Tests in the first and second week of next month, following which they will face India in the ICC World Test Championship final.