ɹˈɑːdʒɚ jaʊdˈɪɹiən dʒˈænjuːˌɛɹi twˈɛnti wˈʌn, nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈoːɹ dʒˈænjuːˌɛɹi ˈeɪt, nˈaɪntiːnhˈʌndɹɪd fˈɪfti sˈɪks wʌz ɐn ɐmˈɛɹɪkən kɹˈɪstʃən mˈɪʃənˌɛɹi tʊ ˈɛkwɐdˌoːɹ hˈuː, ɐlˈɔŋ wɪð fˈoːɹ ˈʌðɚz, wʌz kˈɪld wˌaɪl ɐtˈɛmptɪŋ tʊ ɪvˈændʒəlˌaɪz ðə hjˌuːeɪˈoːɹˈɑːni pˈiːpəl θɹuː ˈɛfɚts nˈoʊn æz ˌɑːpɚɹˈeɪʃən ˈɔːkə.
Roger Youderian (January 21, 1924 – January 8, 1956) was an American Christian missionary to Ecuador who, along with four others, was killed while attempting to evangelize the Huaorani people through efforts known as Operation Auca.