Gevurot Meyruach Hakodesh 7:59-60

And they went on stoning Stefanos as he called upon HASHEM, saying, Adoneinu, receive my neshamah. And having fallen down, he cried out in a kol gadol, Adoneinu, may this aveirah not be held against them! And having said this, Stefanos fell asleep. And Rav Sha'ul was giving approval to the murder of Stefanos.