Just use these lines:

RegisterCommand("cpr", function(source, args, raw)
    TriggerEvent("FakeRevive")
end, false)

RegisterNetEvent("FakeRevive")
AddEventHandler("FakeRevive", function(inputText) 
RequestAnimDict("mini@cpr@char_a@cpr_def")
TaskPlayAnim(GetPlayerPed(-1),"mini@cpr@char_a@cpr_def", "cpr_intro", 1.0,-1.0, 5000, 1, 1, true, true, true)
end)

This should normally work if you type /cpr .
But I don’t know if these are the correct animations, those you can probably find in one of the many revive scripts.