Fire Release: Great Flame Rasengan

Jiraiya creates a normal Rasengan, then spews fire onto it, causing it to turn black and be surrounded by a ring of flames. He then hits the opponent, causing a blazing maelstrom of fire, reducing the opponent to ashes.

Reference
es:Elemento Fuego: Rasengan en Llamas pl:Katon: Gōen Rasengan pt-br:Liberação de Fogo: Grande Rasengan em Chamas