Tajik citizens need a visa to Israel. The visa can be issued at the Israeli Embassy. When submitting documents from the applicant, a personal presence is required.

As a rule, the Embassy issues a single visa. The maximum period of stay in Israel for this visa can be up to 3 months.

If the passport has a stamp of one of the Arab countries, this, in theory, can prevent crossing the border, since Israel has very strained relations with many of these countries. In this case, it is recommended, if possible, to design a new passport.

You need to issue a visa to Israel. When you submit documents to the Consulate you will need to indicate that you entered as a pilgrim to Saudi Arabia.

In your case, a visa is needed. If you have a residence permit in Russia, then you can apply for a visa at the Embassy of the State of Israel in Moscow. Concerning the stamp of Saudi Arabia in the passport: no one will give you a guarantee - will they open you a visa or not? In my practice, Muslims are citizens of Russia, they entered Israel with a stamp of Saudi Arabia in their passport.