No, he claimed there were a vast multitude of Christians executed around 64 CE. At most they would've been a majority in Judea, not a massive group in Rome, and no evidence of such a massacre exists. Also never mentions Jesus, and Messianic Jews were not yet called Christians or Christae or whatever the name was, I forgot. Even Christians say Tacitus' Annals are flawed and give no supporting evidence. Try again? This is fun.