Regarding Atone:

Don't bother using it in between heals for a number of reasons:
1) You will aggro again as soon as you heal
2) If you tanks know their job they will taunt mobs off you if you are
attacked
3) Recharge time on atone is pretty long
4) Mana is better saved for heals

If your tanks are NOT doing the job of taunting off of you, it may be
because they are not watching group health bars. Try making a hot key that
says something in groupsay to notify them you are being attacked. Also, you
can cast Divine Aura on yourself (briefly making you invulnerable). This
works effectively as an anti-taunt ;)

Regarding Naltron:

Get PP or gems from your tanks if you are running out of Peridots. Or don't
cast it on them :)

~Sirensa
Solusek Ro