Pinning concepts like "science" and "freedom" to a specific era is a silly endeavor. But if you had to, neither would originate in Christian Europe: science as a concept predates Christianity by at least 800 years; the thing we call "freedom" today didn't take shape until 1600 years into Christian Europe's development.

Christianity, like just about every religion, has made invaluable contributions to philosophy. But it's ahistorical, to an embarrassing degree, to attribute such broad concepts and bodies of inquiry to it.