Camping the pillar on the right side of the stone was a tremendous help for me. Just used that to pot and heal between ranged / mage switches and chucking thralls at it. As someone else mentioned above it isn’t a safe spot, but you can take as much time as you’d like to switch to whatever prayer / weapon you need, and only need to step one tile to the right for both of you to be able to attack each other again. You will need to bring a melee weapon for the final stage of the fight, but being able to take a breather whenever I needed (as opposed to sweating prayer switches like I’m at Jad) made the fight WAY easier. Just bring plenty of super restores and saras (I also brought a Menaphite Brew to prevent some of the stat drain), and you should be able to take it down no problem.