Hi,
The voltage across the 2k should be limited to 3V3.
Then the voltage at the input is 4.1V.
For precision it is better to connect a 3V3 zener directely at the input, so the zener current does not influence voltage.
But a simulation with a low ohmic 10V source is not usefull often.
Do you really want to protect against 10V DC, a battery for example?
Or do you want an ESD or surge protection?
A capacitor in parallel to the 2k may improve ADC performance. The value depends on analog frequency of interest and sample frequency.
Hope this helps
Klaus