Frequency: always
World name: Shiva
Character name: Ksam Hakt
Class/Level: Scholar/50
Party or solo: tested on both
Area and coordinates: several different
Steps:
1. place Eos far from you
2. start getting closer bit by bit while casting succor (15y range) to get just on the edge of range
3. once succor start affecting fearie, cast any of Eos AoE (all of them have 15y range)

effect : your succor (15y range) will affect fearie while her AoE (15y range) won't reach you

additionaly: was also tested in party where party member was slightly further than fearie, protection (15y range) casted on myself was reaching him while Eos AoE wasn't reaching me (so it's not succor range too high but fearie AoE too low), tested each time with every Eos AoE