This spell creates a shimmering, magical field around the touched creature that averts attacks. The spell grants the subject a +2 deflection bonus to AC, with an additional +1 to the bonus for every six levels you have (maximum +5 deflection bonus at 18th level).
Does it mean it gives another +2 deflection bonus to AC (so it gives +4) and +2 to the bonus for every six levels? (instead of +1)? Where should I apply this bonus given in the name to the potion effect?
Please forgive me if I haven't noticed it anywhere in the book or SRD, but I've tried to find it.