"It doesn't get much bigger I suppose, bar a World Cup or World Cup final.
"For me, this series has been about trying to embrace it, enjoy all the special moments you get throughout the series."
Earmarked for the All Blacks No.10 after the departure of Dan Carter, Cruden endured a frustrating 2016 Test campaign and eventually relinquished the five-eighth role to Beauden Barrett.
Hurricanes star Barrett went on to be named the 2016 World Rugby player of the year and is now among the first names on Steve Hansen's team sheet.
Cruden has twice come off the bench against the Lions, however, including a 50-minute spell in the All Blacks' 30-15 first-test win.
The Manawatu native said his New Zealand's 14-man side had let key moments slip in their second-Test defeat in Wellington, and wouldn't make the same mistake in the series decider - with tries, as opposed to penalty goals, on the menu.
"Probably, in those crucial moments, we weren't as clinical or polished as we normally are," Cruden said.
"That's certainly been at the forefront of our minds.
"Both teams will be hoping to maximise their opportunities.
"If you're able to build the scoreboard up in threes, that's great, but one thing we've spoken about is that we'd love to go up in sevens this week."
Cruden's test career:
Played: 49 tests (26 starts)
Points: 322 (63 conversions, 56 penalties, 5 tries, 1 dropped goal).
Debut: v Ireland 2010, New Plymouth (replaced Dan Carter in the 53rd minute).
Most points: 23 v Australia, Dunedin, 2013
Biggest moment: Starting the 2011 Rugby World Cup final v France, kicking sideline conversion to beat Ireland in 2013.
- AAP