A snippet of Collingwood's 'From The Inside Out' documentary has emerged showing coach Nathan Buckley deliver a moving speech to the playing group moments after the club's five-point 2018 Grand Final loss to West Coast.

The Pies led for the majority of the day before Eagle Dom Sheed famously kicked the match-winning goal in the dying minutes of the fourth quarter from the most impossible of angles.

Normally one of the strongest leaders in football, an emotional Buckley fights back tears as he reflects on the heartbreaking result to his team.

"I don't know how to lead you right now boys. I don't know how to lead you with that experience," the Collingwood coach declares.

"Im sorry. Other than to say, that I'm f***ing so proud of this group. I f***ing love this group.

"We'll be hurting for a little while from this. We'll f***ing hurt. But I don't know what to say to make it better. Because nothing's gonna make it better right now.

"But I believe in who you are, I believe in what we bring.

"But I don't know how to lead you right now."

Catch 'From The Inside Out' on Tuesday, September 3 at 9:30pm (AEST) on ABC.