I hope dussera is a festival holiday and not a national holiday. In order to make the business going, the employer can ask any person to work on any holiday subject to certain conditions. By asking you to work from home on dussera your religious sentiments do not seem to be hurt. Let us take it lightly because you are a Senior position employee (I believe)
When I was studying in school, my teacher used to give all the students a lot of assignments ( in my days it was called as Home Work, but later this new word has come in) when we go for Onam or Christmas vacations. None of us questioned it saying that vacation is for us to enjoy. Let us think this work from home as home work and be positive!!