It is common for Jesus Mythicists to claim that Jesus’ crucifixion was based on earlier (and sometimes later!) pagan myths. They will suggest that god-men such as Horus, Dionysus, Mithras, etc. were all described as being crucified long before the Gospels were written. They are counting on people not checking the facts for themselves.
I thought I would put together a little graphic that demonstrates how close the myths really are to the Gospels.