He testified that the two wrestled on the muddy ground and Davis ended up firing six shots.
"I said, 'That's your six,' so if he was going to kill me, he was going to have to do it with his hands," Beasley testified.
Beasley's lawyers had said that investigators targeted him based only on a hunch and that the identity theft and robbery motives prosecutors offered were baseless.
Beasley's testimony came after the prosecution rested its case without calling Rafferty, who had been subpoenaed to testify for the prosecution. There was no explanation why he didn't testify.
When the Beasley jury reconvenes to hear evidence on whether to recommend the death penalty, prosecutors will get a chance to argue for his execution based on the crimes, and the defense can offer reasons to spare his life.
Rafferty, from Stow, was tried as an adult but didn't face a possible death penalty because he was a juvenile when the crimes occurred.
Rafferty, now 18, had said the crimes were horrible but he didn't see any chance to stop the killings. He said he feared Beasley would kill him and his family if he tipped off police.