As per the Indian tax laws, taxability of any income is dependent upon the residential status of person and sources from where said income is earned.
Residential status depends on the physical presence of a person in India during the said year and also past 10 years. So considering this, you need to firstly determine your residential status as per tax laws.
If you happen to be resident in India your worldwide income is taxable in India. However, if you are non-resident or not-ordinarily resident, then only Indian sourced income is taxable. For the financial year April 2018 to March 2019, if your presence in India is less than 60 days, you will be Non-resident and only your Indian sourced income will be taxable.
As your salary income is earned from US, it is definitely taxable in US and hence taxes are to be paid in US. If this income is taxable in India, you can claim credit for taxes paid in US and hence there is no double tax on the same income. While it is debatable that the salary income received in India for servicing is US is exempt in India, there are various cases in which such income is only taxable where services are rendered by non-resident ie US and not India. It would be less debatable had your salary been paid in US bank account.
Hence, you can file a return by either claiming credit of the taxes paid in US On salary income or just by taking position that being a non-resident and salary earned for service rendered abroad, it is not taxable in INDia. It is important to check the position and documents while filing the return. Your tax return for FY 2018-19 is due to be filed by July 2019 in INDia.