>>"so, How can I choose the resistor values?"
-->You can go through the following video which explains how to select resistance values on I2C lines.
>>"The Pullup voltage will be reduced to 0.1V it's not good in I2C lines."
--> This should not happen because the internal drive modes for I2C pins is Open Drain Drives Low.
>>"How can I protect the I2C lines? when we had series resistance it acts as a voltage divider."
-->Please check the pin configuration once again if you modified it. Also we recommed you to place the series resistances after the pull-up resistances.