Satyajit Roy won the Oscar not lifetime achievement award in 1992.
Satyajit Ray was an Indian filmmaker who worked prominently in Bengali cinema. Ray received numerous awards and honours, including India's highest award in cinema, the Dadasaheb Phalke Award in 1984 and India's highest civilian award, Bharat Ratna in 1992. He was also awarded the Commander of the National Order of the Legion of Honour, the highest decoration in France in 1987 and an Honorary Award at the 64th Academy Awards 1991. He won the Oscar under the Lifetime Achievement in 1992.
See the award acceptance video -