Trust in the Lord.
History is great at showing that the Truth can't be kept in darkness. Throughout the Dark Ages there was a great attempt to eradicate any and all believers who refused to submit to Rome's control. No matter how hard they tried Christians still held to the Truth. Bibles were written in the vernacular and eventually they were printed. The Truth can't be suppressed.
Christ promised that to us. It is why He founded the Catholic Church for us...to protect us from lies.