Climb straight up to a pin about 15' up (shared with Final Prayer Variation) using good horizontal crimps. A couple of small pieces can protect the initial runout.
Thread the piton and tackle the bulgy upper section. The moves are really cool, long reaches from crimps and sidepulls. Clip the second piton located below a mini roof, shake out for a bit and pull the roof. A weird mantle puts you on the upper slab, walk to the anchors.

The guidebook seems to show the route going left around the roof after the 2nd piton for the 10d crux. This puts you on a steep slabby face with horizontal cracks for a few extra moves. Unfortunately, the Famous Ferguson Leaning Tree (TM) has gotten in the way and is now resting on top of this section. Good luck fighting it off if you try to stick to the line...

This route goes straight up the rounded arete between Final Prayer Variation and Inner Light. Start about 6' to the left of a newish bolt (which replaced the 1st pin of Final Prayer Variation), straight below a piton (shared with Final Prayer Variation)

2 ancient but solid pins, I recently watched someone whip on the first one from quite a ways up. EDIT: the Fucking Ferguson Pin Goblin removed both pins. What used to be back up gear is now all you get. I'd go with R/X now... EDIT#2: let's go with PG13/R for those with mad gear knowledge (TR based). 
Clipping the 1st piton puts some nasty torque on the carabiner, I thread a skinny sling through the eye instead (bit strenuous). No problems with the 2nd one.
Small gear before the 1st piton, an orange mastercam would work great in a good undercling (yellow C3 is too small, C4s are too wide)
Both pitons can be backed up, might be smart since there's no gear between them or above.

Chain anchors a ways up the low angle slab at the top. Lower on the Inner Light side if you want your rope to stay dry when you pull it.