OPA1632: What is the recommended input protection scheme for OPA1632?

Part Number: OPA1632

I'm running the amplifier on +/-5vDC.  I'm looking for recommendations on how to protect the inputs as this device will be connected to the outside world.  Is it sufficient to clamp input signals to the voltage rails with silicon diodes or should I try to limit the signal to below the common mode limits?  How does the device behave when the max common mode or differential signals are exceeded?