Artscroll translates it as "How the people of Araby have surrounded us and the Hamites cut us off! They call a man who never prophesied 'The Prophet'. And as for them, they build army, troop and legion. But as for me, where will I go?"
The commentary reproduced above also makes clear that we are talking about Arabs and Muslims.
This specific poem was written about a thousand years ago.
While there is no comparison between how Muslims and Christians treated Jews, the Jews were persecuted enough by Islam to cry out to God to save them.
It would be interesting to find out if the selichot said in Muslim lands included this section.