Resilient sphere's description states that
Nothing--not physical objects, energy, or other spell effects--can pass through the barrier, in or out
While antimagic field's description negates any magical effects within the field (-sphere).
The relevant sections of the antimagic field description are:
Spells and other magical effects, except those created by an artifact or a deity, are suppressed in the sphere and can't protrude into it.
Areas of Magic. The area of another spell or magical effect, such as fireball, can't extend into the sphere. If the sphere overlaps an area of magic, the part of the area that is covered by the sphere is suppressed. For example, the flames created by a wall of fire are suppressed within the sphere, creating a gap in the wall if the overlap is large enough.
Which would win if the areas of effect overlapped? Both say "effects cannot protrude", but antimagic field specifically cancels any spell effect.
- What if the resilient sphere is already cast and another caster casts antimagic field nearby?
- What if the antimagic field is already cast and another caster casts resilient sphere nearby?
- What if the caster casts resilient sphere, then antimagic field?
- What if the caster casts antimagic field, then resilient sphere?
- What if someone within resilient sphere moved into antimagic field?
- What if the creature targeted by resilient sphere moved into antimagic field? Are both spheres suppressed?
Logically, the antimagic field should cancel the sphere in all scenarios, but I'm looking for more RAW answer.