How does two inverting op-amps phase cancel eachother out?
For your frequency sweep at frequencies much lower than the gain-bandwidth of the amplifiers divided by the gain (10) the magnitude will be a constant gain of 100 and the phase will be 0 degrees.  (Or 360 if you prefer.)  The time delay is negligible at the lower frequencies so you won't see it.  

However, at higher frequencies you will see the contribution of both amplifiers to the rolloff and phase shift, which will be different from a single amplifier with another 180 degree phase shift.  So they don't really cancel each other out except at low frequencies.

So for low frequencies gain is constant and phase is pretty much the same as the input signal.  Why would you expect something different?