You need a resistor to prevent too much current being drawn by a zener yes.
That circuit is bad because the zener at the end you apply the voltage will burn out. You only need the one diode not both. These two links review protection.
Hi, if you just want to clamp the input signal, then remove the left hand zener.
Also check what the current will be through the 220R resisitor when you have your over volt condition.
Then calculate the power dissipation in the resistor to make sure you fit one that will not fail due to overload.