Gathered from experimentation and foreign fansites:
Might 3 = +15% P.Atk
Shield 3 = +15% P. Def
Mental Shield 2 = 60% resistance to sleep/hold
Mental Shield 3 = 70% resistance to sleep/hold
Mental Shield 4 = 80% resistance to sleep/hold
Guidance 1 = +2 Accuracy
Guidance 2 = +3 Accuracy
Guidance 3 = +4 Accuracy
Death Whisper 1 = +30% Critical Damage
Death Whisper 2 = +40% Critical Damage
Death Whisper 3 = +50% Critical Damage
Invigor 1 = 30% resistance to bleed
Invigor 2 = 40% resistance to bleed
Invigor 3 = 50% resistance to bleed
Bless Shield 1 = +30% shield block rate
Bless Shield 2 = +40% shield block rate
Bless Shield 3 = +50% shield block rate
Focus 2 = +25% Critical
Focus 3 = +30% Critical
Magic Barrier 1 = +23% M. Def
Magic Barrier 2 = +30% M. Def
Bless the Body 1 = +10% HP
Bless the Body 2 = +15% HP
Bless the Body 3 = +20% HP
Bless the Body 4 = +25% HP
Bless the Soul 1 = +10% MP
Bless the Soul 2 = +15% MP
Bless the Soul 3 = +20% MP
Bless the Soul 4 = +25% MP
Haste 1 = +15% Attack Speed
Haste 2 = +33% Attack Speed
Regeneration 2 = +15% HP Regen
Regeneration 3 = +20% HP Regen
Greater Acumen 1 = +30% Magic Cast Speed
Berserker Spirit 2 = +8% P.Atk, +8% Attack Speed, +8% Magic Cast Speed, -15% P.Def
Bless of Eva 2 = +600% underwater breathing