What would you think is so difficult about this question? Of course, in Arabic. But perhaps it will be a revelation to you that the language spoken by Egyptians and the official language are two different languages. Let us clarify further.
The official language in Egypt is Modern Standard Arabic. All business is done in this language, and the media also uses it. Most citizens of the country understand it, as it is part of the school curriculum. But I do not use it in everyday life, unlike Egyptian Arabic, which is the most widespread dialect of the Arabic language. Most citizens speak it, and it is used to produce entertainment programs, magazines, and newspapers.
The situation with European languages in the country is as follows. The business community communicates in English, French, and German. Egyptians know English well. Until the middle of the 20th century, the country was under the control of Great Britain, and this affected the importance of learning the language. It will be a surprise that most schools teach English as a second language. Therefore, visitors will be especially comfortable knowing it. But even if you don’t know English, Russian will be enough for staying at the hotel and visiting excursions. During the development of the tourism industry, most of its representatives, in particular guides, waiters, taxi drivers, traders, administrators, have mastered a vocabulary sufficient for understanding and minimal communication. And you can bargain with the help of a calculator.