For giggles, I decided to do Rasaad's quest on this run. The party had just collected the documents needed to start chapter 6, but wanted a break. Given Aura's displeasure/trauma of being shipwrecked on werewolf island, I opted to let her rest at the Helm and Cloak.
The rest of the party then headed to Nashkel, picked up Rasaad, and then wandered around a bit until his quest started. Which was when the disappointment started too.
My two paladins wiped the floor with the cultist monks. While they did get a few things in on Sirene (due to her using a two-handed sword), she and Isra were cleaning them out two at a time while the rest of the party watched with amusement.
The only time I had to bring in another party member was to de-trap the temple and drop some fire on the snow trolls. Otherwise, yeah... Isra and Sirene were even chunking a few of them.
Now, I will admit that this is a late-game party. The paladins are both 8th level, and have completed all of the ToSC content. So I'm curious when most people do this quest and at what level. I noticed that it didn't start until we were in the dock area in BG itself, which means it can't start until at least chapter 5.