The following documents are required:
1- Your passport.
2- A Certificate of Singleness, legalized by the Lebanese embassy.
Once you are in Lebanon, you will celebrate your marriage and obtain a marriage attestation from the religious authority that performed the ceremony, whether it's a Muslim or Christian authority.
You will need to register your marriage in Lebanon to obtain a marriage certificate. Afterward, you should register it at the US Embassy. Your husband will also need to register the marriage at the Syrian embassy.
For more information, please feel free to send an email to [link moderated].