righty ho, this is my first tab, great band, i am obsessed. So here it is.
Tuned down to Eb

The first riff simply starts with an E5 chord with an added on G
eb------------------------------------------------------------------
bb-----------------------------------------------------------------
gb------------------------------------------------------------------
db--2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-
ab--2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-
eb--0-0-3-3-0-0-3-3-0-0-3-3-0-0-3-3-0-0-3-3-0-0-3-3-0-0-3-3-0-0-3-3-

verse is this palm muted with this after 6 times 

eb------------------
bb------------------
gb------------------
db--8--7--7--7--7--7
ab--8--7--7--7--7--7
eb--6--5--5--5--5--


eb----------------------
bb----------------------
gb5---------------------
db5---------------------
ab3---------------------
eb---------------------
Some call me the son of the morning, (Eb) God knows im the angle of light


CHORUS:-

   C           F               G
Speak       Of the          Devil x4

There u have it