Suicide by cop is still suicide. If you willingly perform an action that you know will get yourself killed, you are committing suicide.

I think it depends on how you define suicide. If god is omnipotent and guides everyone’s fait and Jesus (god himself) dies, isn’t it only due to god making that happen? Admittedly, this suicide is a more complex one, but in the end, it is still suicide, as the actions taken willingly result in Jesus‘ death