Dominica Resurrectionis is what the Sunday is called in the Missal and Breviary etc.

I doubt though the Protestants take any notice of that.

Prots object to the term “Easter” due to their claim that it’s a reference to some pagan goddess.

Happy Easter! Christ is risen! Alleluia! Alleluia! Alleluia! 

It's actually not 100% clear that "Easter" derives from the English "Eostre", some pre-Christian "goddess" in England.  During Spring was a month they called "Eosturmonath", "Eostre Month".  Of course, we continue to retain days of the week originally named after pagan gods, e.g. Thursday (Thor's day), Wednesday (Wodan's day) ... but they've lost any religious signification these days.  That's always where the Prots fall off the boat or wagon, in not realizing that a vestigial etymology does not carry over into present-day religious signification.

In any case, the term "Easter" could just as easily (and more likely does) carry over from the German Oestern.

According to the Encyclopedia Britannica:

The English word Easter, which parallels the German word Ostern, is of uncertain origin. One view, expounded by the Venerable Bede in the 8th century, was that it derived from Eostre, or Eostrae, the Anglo-Saxon goddess of spring and fertility. This view presumes—as does the view associating the origin of Christmas on December 25 with pagan celebrations of the winter solstice—that Christians appropriated pagan names and holidays for their highest festivals. Given the determination with which Christians combated all forms of paganism (the belief in multiple deities), this appears a rather dubious presumption. There is now widespread consensus that the word derives from the Christian designation of Easter week as in albis, a Latin phrase that was understood as the plural of alba (“dawn”) and became eostarum in Old High German, the precursor of the modern German and English term. The Latin and Greek Pascha (“Passover”) provides the root for Pâques, the French word for Easter.

There's no other source anywhere for this alleged goddess "Eostre" mentioned by Bede (which is peculiar), especially since the term "Oestern" also appears in German, which would hardly been influenced by some obscure British-Island goddess without any other mention in German language.

Regardless of its etymology, we all now know what the word means TODAY, and that's what counts, but that's lost on the Prots.  Maybe they need to rename Thursday and Wednesday also (good luck with that).  In vernacular languages, the meanings of words change over time.

I have no objections to calling "Easter" "Resurrection Sunday", since it is the Latin term, but the Prots annoy me with their misguided "zeal", which also dovetails with their slanders of Catholicism, namely, that Catholicism is just a pagan religion and that THEY adhere to true / pure "Christianity".  So it's part of their incessant propaganda campaign against the Church.

Here is how the you-know-HEWs celebrated Easter this year.

In Bethlehem, the birthplace of Christ.

Undoubtedly very much on purpose.