A Canadian Indigenous leader who greeted world heads of state arriving for the Group of Seven summit says he was “filled with rage” and considered leaving before Donald Trump arrived — saying the U.S. president has “caused much pain and suffering in the world.”

Instead, Steven Crowchild prayed, consulted with his peoples’ leaders and ultimately opted to stay on the tarmac for a long conversation with Trump that he hopes will call more attention to promoting peace, protecting clean water and other issues key to Canada’s First Nation peoples.

“It was really intense, to say the least,” Crowchild told The Associated Press on Monday, recalling his lengthy encounter with Trump on Sunday night in Calgary for the G7 in nearby Kananaskis. “When I woke up on Father’s Day, I didn’t anticipate I would be seeing world leaders, and one certain individual that has caused much pain and suffering in the world.”