Solution to 22D has been deliberately left unsolved and is to be answered by a non-regular/novice commenter, with proper annotation. Those who have answered earlier in the week, please give others a chance.
Open for anyone to answer, if not solved by 1 PM.
ACROSS
9 Crucify people in the wrong (7) TORMENT {TOR{MEN}T}
10 Empty vessel interrupting a game (7) PARKOUR {P{ARK}OUR}
12 Protected circle giving the glad eye (7) LEERING {LEE}{RING}
13 The devil gets credit - is he looking after the church affairs? (9) SACRISTAN {SA{CR}{IS}TAN}
15 Game on a flat dry ground (5) PLAYA {PLAY}{A}
16 First of all, can you prevent the commotion over a Greek dialect? (7) CYPRIOT {Can}{You}{Pr...t}{RIOT} What's the role of OVER?
19 Serious listener's abode (7) EARNEST {EAR}{NEST}
20 Ridicule the occasional calumny in Times (5) TAUNT {T}{cAlUmNy}{T}
21 Overwhelmed as association lets us in (9) AWESTRUCK {AS}{TRUCK} over {WE}
26 Is he against work? That's the question (7) OPPOSER {OP}{POSER}
28 Blimp goes abroad - Paris gets a greeting (7) AIRSHIP {AIRS{HI}P*}
DOWN
1 Afterwards put in a small capital (6) ATHENS {A}{THEN}{S}
2 Satirical contents - bird song, nice? (6) IRONIC {bIRd}{sONg}{nICe}
3 "Press one for superb"- at the end of it all, one is European (4) SERB Tail Acrostic
4 Declare it's time to stop a match (6) ATTEST {T} in {A}{TEST}
5 Cry in the past about grandeur (8) OPULENCE {O{PULE}NCE}
6 Booze on the house for a Bohemian (4,6) FREE SPIRIT [DD]
7 Mention about accepting a label (8) NOMINATE {NOMIN{A}TE*}
8 Show off lifted dress label right inside (8) BRAGGART {GARB<=}{T{R}AG<=} Reversal indicator in the wrong place
14 Visual alarm - activate it and I hit gold! (5,5) IDIOT LIGHT {IT+I+HIT+GOLD}*
16 A whale perhaps can protect an alien one (8) CETACEAN {C{ET}{ACE}AN}
18 Patterns used in the arm of a church (8) TRANSEPT*
22 Foreign state having eat set up (6) E?O?I? {Addendum - EXOTIC {CIT{OX}E<=} See comments) Should have been NEAT and not EAT
23 Bad result from Northern Ireland (6) ULSTER*
Reference List
Wrong = TORT, Protected = LEE, Credit = CR, Time = T, Association = TRUCK, Work = OP, Small = S, Right = R, Alien = ET, Please = PL, Quiet = P