I can help, but I don’t have real-time access to TV listings in this moment. Here’s how to quickly find where Arsenal is being shown tonight: What to check

• Official match page or Arsenal’s schedule: club website or app often lists broadcast details for the day’s game.
• Champions League broadcaster for your region: many regions show Arsenal’s Champions League games on TNT Sports (UK), CBS/Paramount+ (USA), or DAZN (various regions). If it’s a league match, check the domestic broadcaster (e.g., Sky/BT in the UK, ESPN/ABC in the USA, local providers elsewhere).
• Streaming platforms: discovery+/TNT Sports app in the UK, Paramount+/CBS Sports app in the USA, or DAZN in other regions.
• Local channels and streaming deals: sometimes games are on free-to-air or regional networks; check local listings those hours before kickoff.
• Radio options: if you just want live coverage, BBC Radio 5 Live or local radio may offer live commentary.

How to search quickly

• Use your region + “Slavia Prague vs Arsenal live TV” or “Arsenal tonight live stream” in search, with today’s date to pull current listings.
• Check reputable outlets that publish streaming guides for Champions League matchdays (e.g., major sports news sites, broadcaster schedules).

If you share your country/region, I can give you a precise broadcaster and streaming option for tonight’s Arsenal game.