OK, here’s a tarot spread I made up for talking to Lucifer. 

It’s an inverted cross, because bite me, that’s why. 

1. Who are you to me?
   
2. Who am I to you?
   
3. When did you enter my life?
   
4. What must I learn?
   
5. What can I give you?
   
6. Anything else?

I did a whole ritual to accompany this. I cleared the kitchen table and set up two chairs, one for me and one for the devil. I lit my homemade Lucifer prayer candle, and some frankincense (because if Jesus can have nice things Lucifer can too, dammit). I put on my moldavite pendant, and some Ruth White on the stereo. Then I sat down and invited Lucifer to come sit with me. I shared a piece of fruit with him, because Eden/knowledge/you know the story. Then I shuffled the cards and commenced the reading.

You don’t have to do a whole song and dance like that, but I do recommend you take some steps to consciously invite Lucifer to the reading and make him comfortable. Make sure you are making yourself comfortable too, and avoid “sucking up” excessively. Your mileage may vary, but I find he hates it when I place him too far above me. Be a little egalitarian about it. Invite him to your table like a friend, and behave as a generous host. 

I’m not going to share my results because that’s between me and the devil. Please feel free to use this spread if you like, and alter it to suit your needs. Obviously it could be adapted to talk to many other deities, although the inverted cross shape might not be your jam in that case.