When asking for directions in Czech, it is helpful to start with a polite phrase like 'Prosím vás' (Please) or 'Promiňte' (Excuse me). Then, you can ask 'Jak se dostanu na...' (How do I get to...) followed by the specific location or landmark you are trying to reach. If you are not familiar with the local language, it may be useful to carry a map or use a navigation app on your phone. Locals are usually friendly and willing to assist you, so don't hesitate to ask for help if needed.