Safer
Hey-thats your last fight!

According to My FF7 straegy guide:

Your first priority should be setting up wall and casting Regen and haste onto the party. Also, heal anyone who may have been seriously injured during the last fight and restore MP to anyone who has exhausted their supply.

Sephiroth has several powerful attacks. The Pale Horse does a small amount of damage and its the affcted party member with every status effect in the book. Be sure yo have Esuna or a Remedy handy to counter this attack. The Shadow Flare hits a single character for nealy 7000 points of damge Unlessyour lvels are high or your packing a couple of "HP Plus" Materia, this is something to worry about. There is not much you can do about the attack, but hope the wall is ther to absorb some of the damage. Deen is a farly weak attack that does about 1000 to 1500 points of damage, but in a battle lie this you can't take anything or granted. Then there is Sephiroth'ssummon spell Super Nova. This lengthy summun engulfs the party in a blst o cosmic proportions and typically dos bot 3000 to 5000 points of damage. Be sure you have Cure 3 ready after this one.

Keep wall up throughout the battle and remove any negative statuses Sepiroth may use on the party. Use DeBarrier to remove Sephiroth's barrier and to strengthen your attacks. Always try to use attacks that hit more than once, Limit Breaks, 2x Cut, Comet 2 ...anything. If you keep your caractrers alive and move quickly, Sephiroth shouldn't be too tough to beat.


I hope that helps...