NFC p2p Between Arduinos

Hi,

I need help to setup a connection between 2 Arduinos using NFC.
I have been resourcing the web for quite a while and found 2 links that have examples for p2p but between an Arduino and Android:

only found one link that has an example for p2p between Arduinos, using the I2C protocol to connect with the NFC:

The Elechouse NFC uses 3.3V, which means I need a converter for the power and the I2C to 3.3V. I read it can have issues with I2C.

Does anyone know of a library that has NFC p2p between Arduinos that does not use I2C?
Is this a valid work-around: Arduino Playground - I2CBi-directionalLevelShifter?

Thanks!!
John