Heatproofing between cooker and fridge.

[DIXIE]

I have a very small kitchen. I plan to put a new fridge freezer beside the cooker. It has a half width freezer beside the fridge and is exactly what i'd like. I have to keep the cooker where it is, which is next to this. I reckon I have a gap of about 2inches between them. I don't want the heat from the cooker to overheat the freezer.....so - I wondered if there was any kind of special thick heatproof tile or substance I could put inbetween them both?