To be honest there aren’t any Genesis Christmas songs; which is probably a good thing 🙂
However there are few that have a wintry feel, and some mentioning ‘Christmas’ in the lyrics.

1. Snowbound

This may seem Christmassy at first but it does turn pretty dark.

2. Blood On The Rooftops

“We always watch the Queen on Christmas Day”

3. A Winter’s Tale

4. Undertow

5. Jesus He Knows Me

Really pushing the reference 🙂

Just For Fun

Thotch – Black Christmas

Here is Thotch the BBC Parody of Genesis 🙂