Clothed With Christ
This article gives the account of Nate Saint and his colleagues who evangelized to the Huaoranis in Ecuador. God used their death at the hands of the Huaorani men to open the door for mission work.
Jim Elliot
Jim Elliot was part of five missionaries who went to bring the gospel to the Auca Indians in Ecuador in the 20th Century. They were killed for their work and mission, but the Lord used it to inspire many more people to become missionaries.