Mmm, the Mapuches from Chile.
In spite of not being a formerly united nation, they resisted all the conquest attempts over them.
First the Inca empire never could colonize the region, then when the Spaniards came, the so called War of Aruco. In fact the Mapuche territories were not fully incorporated to the actual Chile until late XIX century.
So that could be a case in which a Native American tribe won the war, or at least they denied the attempts of conquest.
Like in the U.S , in the north of Mexico lived some nomadic tribes who were very similar, who resisted the Spaniards. One of them the Yaquis, defeated all the intents of conquest, however they traded with the Jesuits that in the long term converted the Yaquis to Christianity. It was not until 1820 that the Mexican Government subjugated them to obey the Mexican law.
Similar Case , are the Tarahumaras, when Spanish arrived to their territories, they simply went further to the mountains, where the Spanish wouldn’t want to go, even today the Tarahumaras live there and even supposedly live in Mexican territory, they have their own way of doing their things, and since they live so far, nobody wants to go there, nor cares.
The privilege of absurdity; to which no living creature is subject but man only