I've seen many different ways to do this part. All of them lack the edge that Galder 
while playing. Want to know why? because all were incorrect until now.

Enjoy.

|---------------------------|
|---------------------------|
|-------13----12------------|
|----10----------11---11----|
|--8-------10-------11------|
|---------------------------|

|---------------------------|
|---------------------------|
|--------13----12-----------|
|-----10----------11---11---|
|--8--------10-------11-----|
|---------------------------|

|---------------------------|
|---------------------------|
|-------8-----10--8--6--8---|
|----6----------------------|
|-4--------6----------------|
|---------------------------|

|---------------------------|
|---------------------------|
|---------------------------|
|-------8-----11--10--8--10-|
|----8-----8----------------|
|-6-------------------------|

Play around with some slight delay and reverb to get the effect he does live at ozzfest.