This simple yet profound statement expresses a Muslim's complete acceptance of and total commitment to Islam.
I understand you position, but by accepting Islam you say the "Shahadah" you are denying Christ...and accepting the tenets of Islam..
Matthew 10:33 - But whoever denies me before men, I also will deny before my Father who is in heaven.
Allah is not Jehovah...or Yahweh...
Telling or reciting anything in front of some muslim scumbag has no lasting effect. These are not men or anything considered a witness to anything except mayhem and hate. Whatever one has to say before these islamist creeps holds no title or respect. Allow them to believe whatever it takes to escape their vile worship and ways.
No worthy entity will condemn one for dealing with scum as they need to be for survival.