City reached Friday’s showpiece in Saudi Arabia with a 3-0 win over Japanese side Urawa Red Diamonds.
“The way they play, we’ve never faced, never,” said Guardiola.
“I love it. I love the build-up. I love how they associate between each other.”
Guardiola’s side are looking to become the fourth English club to win the trophy after Manchester United, Liverpool and Chelsea.
They face Copa Libertadores winners Fluminense who laboured to a 2-0 win over Egyptian outfit Al Ahly in their semi-final on Monday.
The four-time Brazilian Serie A winners are managed by Brazil interim head coach Fernando Diniz and are likely to start ex-Real Madrid captain Marcelo, 35, in defence.
