Well, the only RUSH guitarist I know of is some "Lifeson" guy; *I've* never
actually played for the band, anyway. :)  I started working this song out
long ago and never finished it; none of the people I was jamming with at the
time liked Rush.

EADGBE
xo
||||||
||||||
||||oo  :- Barre w/first finger
||||||
|||o||  :- Middle finger
||||||
VII ||o|||  :- Pinky

An ill wind comes a-rising across the

EADGBE
x
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||||||
III |o||oo  :- Barre w/first finger
||||||
||oo||

cities of the plain; there's no swimming the heavy

EADGBE
x

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X   |o||oo  :- Note: 10th fret!
||||||
||oo||

water, no singing in the acid rain.

Play the root of each chord with all muted downstroke 1/8th notes, then
"splash" the rest of the chord on the "and" of beat 4.  The guitar
parts during the verse "Left and rights of passage..." are just arpeggiated
variants of the above.  Hope this give you a start.