The Synergist prioritizes spells depending on the paradigm tune; if X-tuned, it will bestow single-target spells like Bravery and Protect; if W-tuned, it will bestow multi-target spells like Bravega and Protectga.
The Conjurer is exclusive to Lightning in the "Requiem of the Goddess" downloadable content scenario. The ATB charge rate is much slower than in other roles, but spells cast by the Conjurer bestow several status enhancements at the cost of removing the previous ones if they were bestowed by other abilities.
The Bar-spells Synergists could learn in Final Fantasy XIII are not available in Final Fantasy XIII-2 in any form. The closest one could get would be resistance accessories.
Sentinel's Element Guard is the closest to Bar-spells from the first installment as it reduces received elemental damage.
-Ga versions of spells have been added since Final Fantasy XIII and they share similarities with the now removed -ra versions: Both the -ga and -ra tiers have significantly shorter durations than their regular versions, but the boost for Bravery, Protect, Faith, and Shell hasn't changed.
Since the removal of the Water element, Enwater has disappeared and Enaero has been added.
Vigilance has had its effect partially changed since Final Fantasy XIII; it no longer boosts the affected character's chances of interrupting enemies. Instead, Vigilance now lowers Wound damage taken.
Deprotect II - Heavy Deprotectga - Deshell II - Heavy Deshellga - Poison II - Heavy Poisonga - Imperil II - Heavy Imperilga - Curse - Cursega - Pain - Painga - Fog - Fogga - Curse II - Heavy Cursega - Pain II - Heavy Painga - Fog II - Heavy Fogga - Endless Nightmare