Romanian side Steaua Bucharest must play their next Europa League home tie in an empty stadium after Uefa punished them for their fans' racist behaviour.
Ludogorets Razgrad must close a section of their ground when they host Real Madrid in the Champions League on 1 October for the same offence.
Both incidents happened when Bulgarian champions Ludogorets hosted Steaua in a Champions League play-off.
Steaua's punishment will take place against Aalborg on 18 September.
The match on 27 August made headlines when Ludogorets defender Cosmin Moti had to go in goal for a penalty shootout and saved two kicks, after scoring the first himself, to send his team into the group stages.
A statement from European football's governing body confirmed that the Bucharest side were fined £40,000 for their fans' racist chants, £8,000 for their fans setting off fireworks and throwing missiles and another £3,600 because their side picked up five or more cards.
Ludogorets were fined £4,750 for having five or more players shown cards and £4,000 each for insufficient organisation and a pitch invasion.
Uefa said: "The fight against racism is a high priority for Uefa. The European governing body has a zero-tolerance policy towards racism and discrimination on the field and in the stands.
"All forms of racist behaviour are considered serious offences against the disciplinary regulations and are punished with the most severe sanctions.
"Following the entry into force of new disciplinary regulations in June 2013, the fight against racist conduct has been stepped up a level - resulting in stricter penalties to deter any such behaviour."