You are clearly at odds with Protestantism. Luther wrote extensively on the subject and even Calvin was conflicted, often contradicting his earlier positions.
lol. Rome wishes. Luther and Calvin and anyone with eyes to see could tell true worship from the idolatry practiced in Rome.
Luther, being a first-generation reformer, made giant strides against the lies of transubstantiation and thus he rightly denied that the Mass is a sacrifice:
"It is quite certain that Christ cannot be sacrificed over and above the one single time he sacrificed himself...Such daily sacrificing is the greatest blasphemy and abomination ever known on the earth."
Calvin, in the second wave of the Reformation, more accurately understood the Lord's Supper to be a memorial where Christ is truly present spiritually.
There is no ground...for any individual to charge us with holding that he is absent from us, and thus separating the head from the members...but, dwelling in us by his Spirit he raises us to heaven to himself, transfusing into us the vivifying vigour of his flesh... The Roman Mass suppresses and buries the cross and Passion of Christ... "Satan never raised up a stronger scheme than the Mass to fight against and strike down Jesus Christ's kingdom"..."(The Lord's Supper) is an aid to our faith related to the preaching of the gospel...an outward sign by which the Lord seals on our consciences the promises of his goodwill toward us in order to sustain the weakness of our faith; and we in turn attest our piety towards him in the presence of the Lord and of his angels and before men...
Here's a nice little website I came across this morning...