If it was for the transmission I'd say stick with OEM and all this discussion is kinda pointless, since its for the power steering. Which in this Pajero is basically nothing but a hydraulic pump and ram. And the manual itself as posted says its fine to use Dex II or III, so really not that much of an issue. Much ado about nothing!
Yes some cars require fancy pants oil even for steering but this is not the case here. Any reasonable brand Dex II or III should be fine, as long as its not made from old samosa and paratha ghee refined in a shed in Ajman.
Check the first pic look similar to your age Pajero? As I am not sure if its exact 2008 owners manual or not. Hope it helps.
Best is go to Habtoor with car registration card and ask for "Genuine MITSUBISHI Power Steering Fluid".
Go to refill capacities Page 9-16