I am 1/1 on Maat. I'm Elvaan btw so my base INT basically sucks, and so do my MP (that's why I fought him as 70, to rely more on skills than on INT and MPs). My gears were:
Main : NQ staves. Yes NQ. If you have HQ it's even better
Sub : Grips didn't exist at that time
Head: AF Head obviously
Body: Glamor Jupon for Elemental Magic, AF body for sleeps etc.
Hands: I can't really remember. Prolly AF hands
Legs: Druids slops for nukes, AF legs for SS.
Feet:I can't remember but prolly AF Feet >_>
Ring1: Malgust Ring, cos a friend had told me the +10 Wind helped for resists
Ring1: Wisdom Ring
Ear1: Moldavite Earring
Ear2: Prolly a Morion Earring
Back: I think it was Gramary Cape. Or Red cape.
Neck: Philomath Stone. Lol. Didn't have money for Torques
My meds were: 2 Stacks of muslim, because they're very quick at use, like 10 Hi pots +1 for convert, 3 Yag Drinks, and I think I used some kind of pie, but now I know Cream Puff woulda been a better choice.
What I did is basically: I rushed to him. Didn't want him to cast blink and or shell and casted Sleep II (at that time he was starting to cast blink lol) nd then disel to ensure he didn't have shell on.
I poped a Yag drink, used Stoneskin and Blink. Other buffs are waste of MP. Started with a simple Aero III/Sleep strat. I used muslims between sleeps. Make sure you sleep him when he 2hes. Around 50% I 2Hed. Make sure Gravity is on before you 2H. I SSed + slept him before convert. AT that point I spammed some Hi pots and finished him off with some Aero III.
To win this fight, just make sure you're ready, with food and macroes. Have a macro for Sleep 1, 2 even bind and gravity in case he resists your sleeps, which can happen a least 1 time in the fight even at 70. Enhancing Magic capped helps a lot too. Nowadays it's very easy to cap. Just spam protect on a general in a besieged... I'm so jealous people have this now, when I think I capped it by spamming Bar spells while waitng on airships and during airships flights^^.
You can also put Earth staff in your SS Macro to avoid interrups
Good luck on Maat.