Mostly Christian/Catholic, but Czechia has the largest atheist rate in the world. So I can answer that Czech religion is Atheism.
a religion started in the Czech republic
Petr cech comes from the Czech Republic , which was a comunist country, so we can not say about his religion.
Most of the population claim connection to no specific religion. However they would call themselves atheists. Traditionally the dominant religion was Roman Catholic but was deeply eroded by nationalistic and communist propaganda to such a state that nowadays we might call the typical Czech person a "Roman Catholic Atheist".
Josef Lukl Hromadka has written: 'Thoughts of a Czech pastor' -- subject(s): Religion
None. Christianity has a long tradition there and it is the most common religion in Czech republic (there are both Catholics and Protestants - since the 14th century). Due to immigrations, Islam and Buddhism have a few percents, too. However, it's said that most Czech people are atheists these days (which may or may not be caused by the long communist era).
the word for CZECH in Czech is "český" like an adjective, "čeština" like a language
The majority of Czech speakers live in the Czech Republic.
Prague is the capital and largest city in the Czech Republic.
Czech is a language. The Czech Republic is a country.
Czech Jean goes by Czech.
Prague is the capital of the Czech Republic.
EuropeThe Czech Republic is in Europe.EuropeThe Czech Republic is part of Europe.