In BG1 I was able to overcome the Wardens in Durlag's Tower after several reloads. The same with the Demon Aec-Letec in Ulgoth's Beard and Sarevok hardly proved any match for my party.
In BGII I defeated both the Shadow Dragon and Firkraag after only a few reloads. I've fought through a horde of vampires, killed the Adamantite Golem and find the Greater Werewolf fairly easy to kill, however...
When it comes to the Illithid layer in the Sewers below the Temple District, I cannot seem to get past them. I can take on 2 maybe 3 Illithids at one time, but 6 is way too many! I've looked for spells and armor that may help with defending against Psionic attacks but haven't found any.
Any help or hints here would be greatly appreciated.
ps: my intention wasn't to brag, only to show that I'm not a complete fool when it comes to troubleshooting battle situations.